wgengine/filter: add "Accept" TCP log lines to verbose logging (#12525)

Changes "Accept" TCP logs to display in verbose logs only,
and removes lines from default logging behavior.

Updates #12158

Signed-off-by: Keli Velazquez <keli@tailscale.com>

wgengine/filter/filter.go

@@ -312,7 +312,7 @@ func (f *Filter) logRateLimit(runflags RunFlags, q *packet.Parsed, dir direction
 		verdict = "Drop"
 		runflags &= HexdumpDrops
 	} else if r == Accept && (runflags&LogAccepts) != 0 && acceptBucket.Allow() {
-		verdict = "Accept"
+		verdict = "[v1] Accept"
 		runflags &= HexdumpAccepts
 	}