Reverts "Roll Flutter Engine from e6f19409b613 to ea93c5d91b12 (3 revisions) (#146100)" (#146106)

Reverts: flutter/flutter#146100
Initiated by: LongCatIsLooong
Reason for reverting: https://ci.chromium.org/ui/p/flutter/builders/prod/Linux_pixel_7pro%20hello_world_impeller/3118/overview
Original PR Author: engine-flutter-autoroll

Reviewed By: {fluttergithubbot}

This change reverts the following previous change:

https://github.com/flutter/engine/compare/e6f19409b613...ea93c5d91b12

2024-04-01 jason-simmons@users.noreply.github.com [Impeller] Add a TextureGLES API for wrapping a framebuffer and use it to implement OpenGL FBO targets in the embedder library (flutter/engine#51269)
2024-04-01 matanlurey@users.noreply.github.com Remove `testing/android_background_image` which does not run/exist on CI. (flutter/engine#51815)
2024-04-01 chinmaygarde@google.com [Impeller] Avoid loading redundant Vulkan extensions. (flutter/engine#51818)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC jacksongardner@google.com,rmistry@google.com,zra@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
diff --git a/bin/internal/engine.version b/bin/internal/engine.version
index 8dfc208..3e34143 100644
--- a/bin/internal/engine.version
+++ b/bin/internal/engine.version
@@ -1 +1 @@
-ea93c5d91b12e8a1ae89f48f89c918dc043aef0a
+e6f19409b613f87880b1897dcaa7adb0c4da3f94