[Impeller] OpenGLES goldens are failing to produce output #142639
Description
The following tests are generating incorrect blank images:
- impeller_Play_AiksTest_CanDrawPaint_OpenGLES
- impeller_Play_AiksTest_CanDrawPaintMultipleTimes_OpenGLES
- impeller_Play_AiksTest_CanDrawPaintWithAdvancedBlend_OpenGLES
- impeller_Play_AiksTest_CanRenderBackdropBlurHugeSigma_OpenGLES
- impeller_Play_AiksTest_CanRenderClippedBlur_OpenGLES
- impeller_Play_AiksTest_CanRenderClippedLayers_OpenGLES
- impeller_Play_AiksTest_CanRenderColorFilterWithInvertColorsDrawPaint_OpenGLES
- impeller_Play_AiksTest_CanRenderLinearGradientMaskBlur_OpenGLES
- impeller_Play_AiksTest_ClippedBlurFilterRendersCorrectly_OpenGLES
- impeller_Play_AiksTest_CollapsedDrawPaintInSubpass_OpenGLES
- impeller_Play_AiksTest_GaussianBlurOneDimension_OpenGLES
- impeller_Play_AiksTest_GaussianBlurRotatedAndClipped_OpenGLES
- impeller_Play_AiksTest_GaussianBlurScaledAndClipped_OpenGLES
- impeller_Play_AiksTest_ImageFilteredUnboundedSaveLayerWithUnboundedContents_OpenGLES
The ones related to blur will probably be fixed by #142355
Bug discovered as a result of flutter/engine#50146