Reverts "Roll Flutter Engine from 752b146df767 to f4c20e97e6aa (2 revisions) (#147495)" (#147502)

Reverts: flutter/flutter#147495
Initiated by: zanderso
Reason for reverting: Crash in framework CI https://ci.chromium.org/ui/p/flutter/builders/prod/Linux_pixel_7pro%20new_gallery_opengles_impeller__transition_perf/2417/overview
Original PR Author: engine-flutter-autoroll

Reviewed By: {fluttergithubbot}

This change reverts the following previous change:

752b146df7...f4c20e97e6

2024-04-28 jonahwilliams@google.com [Impeller] remove image upload from IO thread, limit concurrent worker threads. (flutter/engine#52423)
2024-04-28 jonahwilliams@google.com [Impeller] when creating new pipeline variant block on current thread, re-persist dirty pipeline cache. (flutter/engine#52375)

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 jimgraham@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

bin/internal/engine.version

@@ -1 +1 @@
-f4c20e97e6aa58cde7a19275fcb6f4cdd7b8412f
+752b146df7677cb5c8fd591b82b22a2f0b0f83fb