ui: Accordion widget - Add 'multi' option (#5510) #14165

Job	Run time
analyze	7s
fuzzer / fuzzer	1m 4s
ui / ui	4m 9s
bazel / bazel	1m 54s
rust-sdk / rust-sdk	2m 50s
repo-checks / repo-checks	5m 20s
android / android	8m 44s
linux / linux (clang-x86_64-asan_lsan, is_debug=false is_asan=true is_lsan=true cc_wrapper=\"ccache\")	9m 46s
linux / linux (gcc9-x86_64-release, is_debug=false is_clang=false enable_perfetto_grpc=true cc=\"gcc-9\" ...	8m 19s
linux / linux (clang-x86_64-debug, is_debug=true is_hermetic_clang=false non_hermetic_clang_stdlib=\"libc...	16m 16s
linux / linux (clang-x86_64-msan, is_debug=false is_msan=true cc_wrapper=\"ccache\")	13m 2s
linux / linux (clang-x86-release, is_debug=false target_cpu=\"x86\" cc_wrapper=\"ccache\")	3m 33s
linux / linux (clang-x86_64-tsan, is_debug=false is_tsan=true cc_wrapper=\"ccache\")	9m 4s
bigtrace	0s
ensure-ci-is-green	3s
	1h 24m 11s

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