Merge pull request #9838 from dgquintas/fuzzer_remove_asserts

src/core/ext/client_channel/client_channel.c

src/core/ext/client_channel/subchannel.c

src/core/ext/lb_policy/grpclb/grpclb.c

src/core/ext/lb_policy/pick_first/pick_first.c

src/core/ext/lb_policy/round_robin/round_robin.c

src/core/lib/surface/channel.c

...s/api_fuzzer_corpus/clusterfuzz-testcase-5242554383597568

...s/api_fuzzer_corpus/clusterfuzz-testcase-6499902139924480

...s/api_fuzzer_corpus/clusterfuzz-testcase-6699208922890240

tools/run_tests/generated/tests.json