[Impeller] Android device that successfully falls back to GLES renderer will print several warning messages

[jonahwilliams]

E/flutter ( 6908): [ERROR:flutter/impeller/base/validation.cc(49)] Break on 'ImpellerValidationBreak' to inspect point of failure: No valid Vulkan device found.
E/flutter ( 6908): [ERROR:flutter/shell/platform/android/android_context_vulkan_impeller.cc(48)] Using the Impeller rendering backend (Vulkan).
E/flutter ( 6908): [ERROR:flutter/shell/platform/android/android_context_gl_impeller.cc(80)] Using the Impeller rendering backend (OpenGLES).

We should not print "Using the Impeller rendering backend (Vulkan)." if we end up using GLES and make sure that the validation message does not print either

This was tested on a wembly.

[chinmaygarde]

As a quick fix, there is an impeller::ScopedValidationDisable we can add to the scope that does the fallback to suppress these as messages. We add these to unit-tests to suppress validation chatter.

Just a generic message that says "tried to use Vulkan and OpenGL but both failed." or something similar.

[Rohithgilla12]

@chinmaygarde I want to give this a try, which is a good place to get started for this issue?

[jonahwilliams]

Fixed in flutter/engine#51071

[github-actions]

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