Pick block is used 1 time if you hold down the pick block button on the mouse

Summary:
Pick block is used 1 time if the pick block button is on the mouse. When assigning a button on the keyboard, the pick block will be used continuously when held down.

Steps to reproduce:

1. Assign a pick block to a keyboard button.

2. Hold down the assigned button in the game.

3. Aim at different blocks.

4. Assign a pick block to a mouse button.

5. Hold down the assigned button in the game.

6. Aim at different blocks.

Observed results:
Pick block is used 1 time if the pick block button is on the mouse.

Expected results:
Pick block is used continuously while holding down the key.