Fix nvim-remote commands for fish shell #7310

Job	Run time
ci - windows-latest	1m 27s
ci - ubuntu-latest	45s
Integration Tests - git 2.22.0	1m 31s
Integration Tests - git 2.23.0	1m 30s
check-for-fixups	5s
check-codebase	26s
Integration Tests - git 2.30.8	1m 23s
Integration Tests - git 2.25.1	1m 24s
lint	43s
Integration Tests - git latest	1m 31s
check-required-label	3s
build	1m 21s
upload-coverage	0s
	12m 9s

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