Update Matrix Rust SDK to 26.10.07-nightly (#7880)

* Update Matrix Rust SDK to 26.10.07-nightly

* Adapt to the new QR code login task API

`generate()` and `scan()` of `GrantLoginWithQrCodeHandler` and `LoginWithQrCodeHandler`
now return a task instead of suspending until the flow is over. Wait for the task to
complete, and cancel it if the coroutine is cancelled, so that the flow is also stopped
on the Rust side.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

* Add tests for the cancellation of the QR code login tasks

Check that cancelling the coroutine of the link new device handlers and of the QR code
login cancels the task returned by the SDK, so that the flow is stopped on the Rust side.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

* Fix import ordering in the link new device handler tests

ktlint expects the imports to be sorted in lexicographic order.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Benoit Marty <benoit@matrix.org>
Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

gradle/libs.versions.toml

@@ -186,7 +186,7 @@ test_detekt_test = { module = "io.gitlab.arturbosch.detekt:detekt-test", version
 # it as a plain `require`: without this, a library built against a newer SDK would silently drag this app
 # onto it. With it, this pin always wins, and a library that needs something newer fails at configuration
 # time naming both versions instead of at runtime with NoSuchMethodError.
-matrix_sdk = { module = "org.matrix.rustcomponents:sdk-android", version = { strictly = "26.10.05-nightly" } }
+matrix_sdk = { module = "org.matrix.rustcomponents:sdk-android", version = { strictly = "26.10.07-nightly" } }
 rustls_platform_verifier = "org.rustls:rustls-platform-verifier:0.2.0"
 
 # Others