Roll Flutter Engine from b2167a93c1a0 to 4b145d041560 (3 revisions) (#142256)

https://github.com/flutter/engine/compare/b2167a93c1a0...4b145d041560

2024-01-25 jonahwilliams@google.com [Impeller] Fix mipmap generation for Vulkan render target textures. (flutter/engine#49848)
2024-01-25 jason-simmons@users.noreply.github.com [Impeller] Do not emit metadata for structs that are not part of the shader's interface (flutter/engine#50029)
2024-01-25 skia-flutter-autoroll@skia.org Roll Skia from de46a989e0ca to 29b545e4356b (1 revision) (flutter/engine#50047)

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

bin/internal/engine.version

-b2167a93c1a0470f5d45553fc332e2914d03b29f
+4b145d041560949cda5f0c1f62e2f6dcae90b28b