[libc++][vector] Inline remaining constructors filling vector with the same value (#82068)

Placing physically next to each other remaining constructors filling
vector with the same value
will make code better, since they all have nearly identical
implementation, which needs to be kept in sync.

Co-authored-by: Mark de Wever <koraq@xs4all.nl>
NOKEYCHECK=True
GitOrigin-RevId: c7e9b4918e5bd4936dbc036ba65eae178f5cc994
1 file changed