Use Panorama event handlers for handling dropdown selection changes #1923

Job	Run time
msbuild (windows-2025, ClangCL, Release)	1m 3s
msbuild (windows-2022, MSVC, Release)	55s
msbuild (windows-2022, MSVC, Debug)	42s
msbuild (windows-2025, MSVC, Debug)	45s
msbuild (windows-2022, ClangCL, Debug)	59s
msbuild (windows-2022, ClangCL, Release)	1m 4s
cmake (windows-2025, ClangCL, Debug)	4m 2s
cmake (windows-2025, ClangCL, Release)	3m 48s
cmake (windows-2022, MSVC, Debug)	4m 0s
msbuild (windows-2025, MSVC, Release)	52s
cmake (windows-2022, MSVC, Release)	5m 35s
cmake (windows-2025, MSVC, Release)	5m 51s
cmake (windows-2025, MSVC, Debug)	4m 20s
cmake (windows-2022, ClangCL, Debug)	3m 31s
cmake (windows-2022, ClangCL, Release)	3m 47s
msbuild (windows-2025, ClangCL, Debug)	52s
	42m 6s

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