Buttons are added to Graph Hbox, not outside it

[bits-by-brandon]

Description

Edits button logic to insert Make Floating button and Toggle Panel button inside the GraphEdit HBox instead of beside it.
Allows buttons to be clicked

Note: This doesn't fix the icons for me, but at least fixes the clicking.

Addressed issues

• Debugger control issues in 4.2 #256

Screenshots

[bits-by-brandon]

Register singleton 'regex_richtext:<RegEx#-9223371819002624369>'

What's this testing for? Is this flake or should I fix something?

[bits-by-brandon]

These names are just for helpful debugging in the Remote scene view

[bits-by-brandon]

Still getting this very slightly out of acceptable range error:

Run Test Suite res://test/randomized_composites/weighted_sampling/selector_random/selector_random_weights_test.gd 
	Run Test: res://test/randomized_composites/weighted_sampling/selector_random/selector_random_weights_test.gd > test_weights_effecting_sample :STARTED
Register singleton 'GdUnitDefaultValueDecoders:<RefCounted#-9223371819304614250>'
	Run Test: res://test/randomized_composites/weighted_sampling/selector_random/selector_random_weights_test.gd > test_weights_effecting_sample :FAILED 262ms
	Report:
Register singleton 'regex_richtext:<RegEx#-9223371819002624369>'
		line 36: Expecting:
		 '54.014599'
		 in range between
		 '46.000000' <> '54.000000'

[bitbrain]

Those are flaky tests in the main branch I aim to fix today. Sorry for that!

[bitbrain]

This is how this PR looks on my end. Good job! I will fix the icon scaling separately.