Merge remote-tracking branch 'origin/master' into geometry-nodes

Merge remote-tracking branch 'origin/master' into geometry-nodes

Merge branch 'master' into geometry-nodes

UI: Add new node colors for geometry nodes

During the development of the new nodes in the `geometry-nodes` branch
the color of the new nodes wasn't considered, so all of the nodes ended
up red, the color for "input" nodes. This patch introduces two new
colors, one for "Geometry" and one for "Attributes". There are only two
attribute nodes currently, but the next sprint will add two more,
attribute mix, and sample from texture. The attribute nodes are
conceptually different enough from the nodes that modify the geometry
that they deserve their own color.

Differential Revision: https://developer.blender.org/D9682

Geometry Nodes: support swapping inputs in function nodes

This is the same fix as in rB5ae666c2cc67be0e5ffb897c1ff48fe434d7dbc6.

Geometry Nodes: automatically reconnect when swapping inputs

This makes it easier to swap the inputs to the Join Geometry node.
The behavior is the same as in the Math node.

Geometry Nodes: correct modifier name when creating from node editor

The name should be the same as when the modifier is created in the
modifier tab of the properties editor.

Cleanup: Store "is_active" instead of pointer property in panel type

This is consistent with the way other panel type fields are stored.

Merge branch 'master' into geometry-nodes

Merge remote-tracking branch 'origin/master' into geometry-nodes

Cleanup: add a comment

Merge branch 'master' into geometry-nodes

Cleanup: correct function name

Geometry Nodes: Change modifier name

The modifier was called "Empty", which reflects the fact that the modifier
doesn't do anything when you add it. However, that is not true after you
change the modifier's node group, and the fact that the modifier uses
nodes is the one thing that distinguishes it at this point. This commit
changes the name to "Geometry Nodes", which is simple and consistent
with the "Geometry Node Editor" and the naming of the project so far.

Merge branch 'master' into geometry-nodes

Merge branch 'master' into geometry-nodes

Geometry Nodes: do not create geometry depsgraph relation for empty object

This resulted in a warning.

Geometry Nodes: support muted nodes

The handling of muted nodes is handled at the derived node tree
level now. This is also where expanding node groups is handled.
Muted nodes are relinked and removed from the derived tree
during construction. The geometry node evaluation code does
not have to know about muted nodes this way.

Theme: Update shader node color to match socket color

Related to T82689

Reviewed by Brecht

UI: Update node socket colors

Note: This also changes the Shader socket color, to match "Shading" in the Outliner.

Theme update for shader nodes will be committed separately.

Related to T82689