scripts/client: Remove uses of Autohook from scriptbrowserhooks.cpp

[ASpoonPlaysGames]

Code review:

• The original function is prefixed with o_p so any times where the old AUTOHOOK was calling the original function it should now be calling that instead.
• The hook function is prefixed with h_ so any times where we would be wanting to call the hooked function from other functions should now be calling that instead

Testing:

• Check logs to make sure that all of the changed hooks are being created properly
• Check that the "force external web browser" script flag for OpenExternalWebBrowser still works (i.e it opens in a separate web browser instead of the origin/steam/whatever overaly)

[RoyalBlue1]

code looks good and links still open in external browser