Revert 'PDump' specific font definitions

[zxz41]

Description

At the launch of the HL2 Anniversary update, the PDump hud got specific definitions, probably due to conflicts with the new GorDIN definitions etc. However for some reason these font definitions have been later reverted for HL2.

These clientscheme font definitions were never added to other Source Engine branches (TF2, CSS etc.) and the SDK 2013 code haven't been updated to reflect the removal of the PDump hud font either.

This revert also fixes https://github.com/ValveSoftware/Source-1-Games/issues/7100 (which also points to the font defs being changed.)