[camera_platform_interface] Make setJpegImageQuality default a no-op

[Bolling88]

The default implementation of setJpegImageQuality threw UnimplementedError, but there is no support-query API for it, so a client has no way to know whether it is safe to call (raised in review of #11155). JPEG quality is a best-effort setting, so this changes the default to a no-op: platforms that support it override the method, and platforms that don't (e.g. web) simply ignore it.

[gemini-code-assist]

Code Review

This pull request changes the default implementation of setJpegImageQuality in CameraPlatform from throwing an UnimplementedError to a no-op, allowing unsupported platforms to ignore the setting safely. The package version is bumped to 2.13.1, and corresponding tests and CHANGELOG are updated. Feedback suggests adding an assertion to enforce the valid quality range (1 to 100) and returning Future<void>.value() directly to avoid async overhead, along with updating the tests to verify this assertion.

[gemini-code-assist]

The documentation states that quality must be between 1 and 100. Adding an assertion to enforce this contract in the default implementation ensures consistent behavior across all platforms during development, preventing silent bugs when testing on platforms that do not support JPEG quality control.

Additionally, since this is a synchronous no-op, we can return Future<void>.value() directly and avoid the async keyword overhead.

Suggested change

	Future<void> setJpegImageQuality(int cameraId, int quality) async {
	// No-op by default. Platforms that support setting the JPEG quality
	// override this method.
	}
	Future<void> setJpegImageQuality(int cameraId, int quality) {
	assert(quality >= 1 && quality <= 100);
	return Future<void>.value();
	}

[gemini-code-assist]

Update the test to verify that the default implementation completes successfully for valid quality values, and asserts on invalid quality values (e.g., < 1 or > 100).

    test('Default implementation of setJpegImageQuality() is a no-op and asserts on invalid quality', () {
      // Arrange
      final cameraPlatform = ExtendsCameraPlatform();

      // Act & Assert
      expect(cameraPlatform.setJpegImageQuality(1, 50), completes);
      expect(() => cameraPlatform.setJpegImageQuality(1, 0), throwsAssertionError);
      expect(() => cameraPlatform.setJpegImageQuality(1, 101), throwsAssertionError);
    });

[bparrishMines]

LGTM

@stuartmorgan-g for secondary review since you left the comment at #11155 (comment)

[stuartmorgan-g]

LGTM