perf-scripts: Fix argument passing in prof-cog script

Replace `$@` with `$*` to ensure that all command-line arguments are
passed correctly as a single word to the `cog` command. This change
prevents issues with argument handling when arguments contain spaces or
special characters.

Fixes SC2145 (error): Argument mixes string and array. Use * or
separate argument.

Author: psaavedra

recipes-benchmark/perf-scripts/files/prof-cog

@@ -1,4 +1,4 @@
 #!/bin/sh
 export COG_PLATFORM_FDO_VIEW_FULLSCREEN=1
 
-psrecord --include-children --interval 5 --log cog.log "cog -P fdo --webprocess-failure=exit --cookie-store=always --cookie-jar=text:$HOME/.cache/cog-cookies.txt --enable-webaudio=0 --enable-mediasource=1 --enable-media-capabilities=1 $@"
+psrecord --include-children --interval 5 --log cog.log "cog -P fdo --webprocess-failure=exit --cookie-store=always --cookie-jar=text:$HOME/.cache/cog-cookies.txt --enable-webaudio=0 --enable-mediasource=1 --enable-media-capabilities=1 $*"