Description of Changes

This fixes two minor issues with the symbol trees:

• When you click a checkbox in the symbol tree (displayed for bools) it will now write the new value back to memory immediately instead of waiting for you to deselect the checkbox.
• When you reset the children of a symbol tree node it will now populate their values from memory immediately instead of waiting for them to update. This prevents flicker.

Rationale behind Changes

It makes the check box widgets delightful to use.

Suggested Testing Steps

• Create a global variable of type bool for some variable where the result is immediately apparent on screen, and check and uncheck the box repeatedly until you're satisfied that the new behaviour is better.
• Now make an array and click the "Reset Children" context menu option on it, and observe that the children don't flicker.