Fix broken opengles dart engine test: high_bitrate_texture_test.dart #183462
Description
The high_bitrate_texture_test.dart dart engine test is currently skipped when running with an opengles impeller backend.
Multiple tests do not pass, but the test ends after the first failure:
00:00 +0: decodeImageFromPixels with RGBA Float32
00:00 +1: decodeImageFromPixels with R Float32
00:00 +2: decodeImageFromPixels with rgbaFloat32, toByteData rgbaFloat32
[ERROR:flutter/impeller/renderer/backend/gles/blit_command_gles.cc(367)] Break on 'ImpellerValidationBreak' to inspect point of failure: Only textures with pixel format RGBA or BGRA are supported.
[FATAL:flutter/impeller/renderer/backend/gles/blit_pass_gles.cc(88)] Check failed: result. Must be able to encode GL commands without error.