Rename PreviewParameterProvider subclasses to the PreviewParam suffix

The `Provider` suffix reads as a dependency provider rather than as preview
data, and it collides with the real providers in the codebase — `StringProvider`,
`PickerProvider`, the login feature's `AccountProvider` — so the name says
nothing about which of the two a class is. `PreviewParam` says it.

195 classes are renamed, along with the 185 files named after them, the konsist
rule that enforces the convention, the presentation-class file templates and the
onboarding documentation.

This cannot be split. `Konsist.scopeFromProduction()` scans the whole project, so
flipping the assertion before every class has moved leaves the rule red, and a
rule that accepted either suffix during a transition would be exactly the kind of
compatibility layer this convention change is meant to remove.

Two judgement calls in the rule itself. The `name.endsWith("PreviewProvider")`
exclusion is dropped: its only job was to reject a redundant `Preview` before
`Provider`, and the new suffix already contains it; no class currently ends with
`PreviewProvider`, so removing it changes nothing today. And
`EditableAvatarViewUriProvider` is renamed rather than deleted from the exclusion
list even though no such class exists in this repository, since it presumably
comes from the modules overlaid for the enterprise build.

Nothing keyed off the old suffix: no snapshot filename contains a provider class
name, so no Paparazzi image changes, and the Kover variants match on `*Presenter`,
`*State` and `*ViewKt`, so coverage bounds are unaffected.

features/space/impl/src/main/kotlin/io/element/android/features/space/impl/addroom/AddRoomToSpaceStatePreviewParam.kt

@@ -17,7 +17,7 @@ import kotlinx.collections.immutable.ImmutableList
 import kotlinx.collections.immutable.persistentListOf
 import kotlinx.collections.immutable.toImmutableList
 
-internal class AddRoomToSpaceStateProvider : PreviewParameterProvider<AddRoomToSpaceState> {
+internal class AddRoomToSpaceStatePreviewParam : PreviewParameterProvider<AddRoomToSpaceState> {
     override val values: Sequence<AddRoomToSpaceState>
         get() = sequenceOf(
             // Initial state with suggestions

features/space/impl/src/main/kotlin/io/element/android/features/space/impl/addroom/AddRoomToSpaceView.kt

@@ -273,7 +273,7 @@ private fun RoomListItem(
 @PreviewsDayNight
 @Composable
 internal fun AddRoomToSpaceViewPreview(
-    @PreviewParameter(AddRoomToSpaceStateProvider::class) state: AddRoomToSpaceState
+    @PreviewParameter(AddRoomToSpaceStatePreviewParam::class) state: AddRoomToSpaceState
 ) = ElementPreview {
     AddRoomToSpaceView(
         state = state,

features/space/impl/src/main/kotlin/io/element/android/features/space/impl/leave/LeaveSpaceStatePreviewParam.kt

@@ -19,7 +19,7 @@ import kotlinx.collections.immutable.ImmutableList
 import kotlinx.collections.immutable.persistentListOf
 import kotlinx.collections.immutable.toImmutableList
 
-class LeaveSpaceStateProvider : PreviewParameterProvider<LeaveSpaceState> {
+class LeaveSpaceStatePreviewParam : PreviewParameterProvider<LeaveSpaceState> {
     override val values: Sequence<LeaveSpaceState>
         get() = sequenceOf(
             aLeaveSpaceState(),

features/space/impl/src/main/kotlin/io/element/android/features/space/impl/leave/LeaveSpaceView.kt

@@ -366,7 +366,7 @@ private fun SpaceItem(
 @PreviewsDayNight
 @Composable
 internal fun LeaveSpaceViewPreview(
-    @PreviewParameter(LeaveSpaceStateProvider::class) state: LeaveSpaceState,
+    @PreviewParameter(LeaveSpaceStatePreviewParam::class) state: LeaveSpaceState,
 ) = ElementPreview {
     LeaveSpaceView(
         state = state,

features/space/impl/src/main/kotlin/io/element/android/features/space/impl/root/SpaceStatePreviewParam.kt

@@ -26,7 +26,7 @@ import kotlinx.collections.immutable.toImmutableList
 import kotlinx.collections.immutable.toImmutableMap
 import kotlinx.collections.immutable.toImmutableSet
 
-open class SpaceStateProvider : PreviewParameterProvider<SpaceState> {
+open class SpaceStatePreviewParam : PreviewParameterProvider<SpaceState> {
     override val values: Sequence<SpaceState>
         get() = sequenceOf(
             aSpaceState(),

features/space/impl/src/main/kotlin/io/element/android/features/space/impl/root/SpaceView.kt

@@ -680,7 +680,7 @@ private fun RemoveRoomsActionView(
 @PreviewsDayNight
 @Composable
 internal fun SpaceViewPreview(
-    @PreviewParameter(SpaceStateProvider::class) state: SpaceState
+    @PreviewParameter(SpaceStatePreviewParam::class) state: SpaceState
 ) = ElementPreview {
     SpaceView(
         state = state,

features/space/impl/src/main/kotlin/io/element/android/features/space/impl/settings/SpaceSettingsStatePreviewParam.kt

@@ -13,7 +13,7 @@ import io.element.android.libraries.designsystem.preview.SPACE_NAME
 import io.element.android.libraries.matrix.api.core.RoomAlias
 import io.element.android.libraries.matrix.api.core.RoomId
 
-open class SpaceSettingsStateProvider : PreviewParameterProvider<SpaceSettingsState> {
+open class SpaceSettingsStatePreviewParam : PreviewParameterProvider<SpaceSettingsState> {
     override val values: Sequence<SpaceSettingsState>
         get() = sequenceOf(
             aSpaceSettingsState(),

features/space/impl/src/main/kotlin/io/element/android/features/space/impl/settings/SpaceSettingsView.kt

@@ -223,7 +223,7 @@ private fun LeaveSpaceItem(
 @PreviewsDayNight
 @Composable
 internal fun SpaceSettingsViewPreview(
-    @PreviewParameter(SpaceSettingsStateProvider::class) state: SpaceSettingsState
+    @PreviewParameter(SpaceSettingsStatePreviewParam::class) state: SpaceSettingsState
 ) = ElementPreview {
     SpaceSettingsView(
         state = state,