[grpc][Gpr_To_Absl_Logging] Migrating from gpr to absl logging GPR_ASSERT
Replacing GPR_ASSERT with absl CHECK
Will not be replacing CHECK with CHECK_EQ , CHECK_NE etc because there are too many callsites. Only a few - which fit into single - line regex will be changed. This would be small in number just to reduce the load later.
Replacing CHECK with CHECK_EQ , CHECK_NE etc could be done using Cider-V once these changes are submitted if we want to clean up later. Given that we have 5000+ instances of GPR_ASSERT to edit, Doing it manually is too much work for both the author and reviewer.
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Closes#36224
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36224 from tanvi-jagtap:assert_end2end_general 0b0e940f5d
PiperOrigin-RevId: 623410297
* Adding suffix for stats handling to gRPC
* Fixing typo
* Fixing codegen, adding tests
* Fixing test failures
* Adding nullptr default in StubOptions
* Updating golden test file
* Replacing std::make_unique with absl::make_unique for pre-C++14 compatibility
* Fixing clang format errors
* Reuse stub options for generic stubs
* Cleaning up compiler warnings in GenericStub
Tanvi Jagtap