[rcore] Fix IsMouseButtonUp() for PLATFORM_WEB and PLATFORM_DRM

[ghost]

Changes

1. Fixes IsMouseButtonUp() for PLATFORM_WEB by adding the missing handling for CORE.Input.Touch.currentTouchState[] on the MouseButtonCallback (R1096).

2. Fixes IsMouseButtonUp() for PLATFORM_DRM by adding the missing handling for CORE.Input.Touch.currentTouchState[] on the PollInputEvents() (R574).

Credit

• Issue found by @Bigfoot71 at [core] Problem with IsMouseButtonUp which always returns true #3606.
  Very good catch, great job!

Reference

• This is also a complementary fix for [core] Problem with IsMouseButtonUp which always returns true #3606,
  since it also affects PLATFORM_WEB and PLATFORM_DRM.

Environment

• Compiled on Linux (Ubuntu 22.04 64-bit) and tested on Firefox (115.3.1esr 64-bit) and Chromium (117.0.5938.149 64-bit).
• Compiled and tested on Raspberry Pi 3 Model B 1.2 (2015) with Linux (Raspberry Pi OS 12 Bookworm 32-bit armhf).

Edits

• 1: added line marks.
• 2: added DRM fix.

[raysan5]

@ubkp Thank you very much for reviewing the Web/DRM platforms!