[Storage] Improve how GetFile handles paths #7471

Job	Run time
prepare_matrix	4s
local-integration-tests-linux-openssl	7m 21s
ubuntu-22.04-Release-x64-static	15m 31s
ubuntu-22.04-Release-x86-static	15m 8s
macos-14-Release-arm64-static	19m 0s
windows-latest-Debug-x86-dynamic	42m 32s
ubuntu-22.04-Debug-x64-static	16m 57s
ubuntu-22.04-Debug-x86-static	15m 38s
macos-14-Debug-arm64-static	22m 44s
windows-latest-Release-x64-static	51m 13s
	3h 26m 8s

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