cmd/link: do not add label symbols for DWARF on Windows/ARM64
cmd/link: do not add label symbols for DWARF on Windows/ARM64

Label symbols are only useful for relocations from text. No need
to do it for DWARF. And the PE symbol table doesn't like them.

May fix #51903.

Change-Id: Ibe6ea880d8533ba1dcc017030072c7dffee0e9e5
Reviewed-on: https://go-review.googlesource.com/c/go/+/395215
Trust: Cherry Mui <d62e63aa42ce272d7b6a5055d97e942b33a34679@google.com>
Run-TryBot: Cherry Mui <d62e63aa42ce272d7b6a5055d97e942b33a34679@google.com>
TryBot-Result: Gopher Robot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Reviewed-by: Than McIntosh <4b2922593166fc595a9b1a408f34f5d3817fe9d2@google.com>

nawawi/go,CAFxX/go,nawawi/go,CAFxX/go,golang/go,golang/go,nawawi/go,golang/go,golang/go,golang/go,golang/go,golang/go,nawawi/go,CAFxX/go,CAFxX/go,nawawi/go,nawawi/go,CAFxX/go,nawawi/go,golang/go,CAFxX/go,CAFxX/go,CAFxX/go,nawawi/go