fix: wide string concatenation (#40909)

* fix: wide string concatenation

Co-authored-by: clavin <clavin@electronjs.org>

* Use wstring_views to keep length in context

Co-authored-by: clavin <clavin@electronjs.org>

* forgot a space, oopsies

Co-authored-by: clavin <clavin@electronjs.org>

* chore: update patches

* use AsWStringPiece
This code is being merged to a branch before the change from crrev.com/c/5010979

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Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com>
Co-authored-by: clavin <clavin@electronjs.org>
Co-authored-by: PatchUp <73610968+patchup[bot]@users.noreply.github.com>