Key Map dialog improvements. #2752

Job	Run time
Check for Max SDK	1s
linux-x64-internal-release	1m 3s
macos-arm64-internal-release	1m 4s
linux-x64-internal-debug	1m 2s
macos-arm64-internal-debug	1m 3s
linux-x64-external-release	1m 1s
macos-arm64-external-release	1m 3s
macos-x64-internal-release	1s
macos-x64-internal-debug	54s
macos-x64-external-release	1m 2s
maxplugin-${{ matrix.cfg.str }}-${{ matrix.cfg.sdk-version }}	0s
windows-x86-internal-release	42s
windows-x86-internal-debug	40s
windows-x86-external-release	42s
windows-x64-internal-release	41s
windows-x64-internal-debug	41s
windows-x64-external-release	41s
	12m 21s

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