Inserting/reparenting into a grid component (#6602)

**Problem:**
Inserting/reparenting into a grid component doesn't work.

**Root cause:**
The problem is the following:
- We collect the global frames of grid cells using the measurement
helper components (which render an invisible clone of the grid with
placeholders in each cell, so they are measurable html elements)
- getSpecialSizeMeasurements needs to find the appropriate measurement
helper in the dom
- Measurement helpers are identifiable because they have an id which
includes the element path of the grid they refer to. This a path which
is coming from the metadata of the element.
- getSpecialSizeMeasurements uses the element path from the data-path
attribute of the measured grid element to find the measurement helper
- When the grid is a component, the rendered grid layouted div's
data-path contains the element path of the root element of the component
and not the path of the component itself (e.g. foo/bar/grid:root instead
of foo/bar/grid). But the measurement helper's id includes the element
path of the component (e.g. foo/bar/grid). Because of this,
getSpecialMeasurements does not find the measurement helper for this
grid, and it does not store the grid cell global frames in
specialSizeMeasurements

**Fix:**
- Instead of using the data-path of the measured element, use the paths
coming from `getPathsOnDomElement`, which lists all the possible utopia
element paths connected to this rendered html element. Try to find the
measurement helper using these paths (it is enough to use the first one
which is found).
- For the measurement of parentGridCellGlobalFrames, just do the same
thing on the parent element in the dom.
- I renamed `measureGlobalFramesOfGridCellsFromControl` because it
doesn't use the grid control anymore (but the measurement helper).

This change fixes all draw-to-insert/click-to-insert/reparent
functionalities.

**Manual Tests:**
I hereby swear that:

- [x] I opened a hydrogen project and it loaded
- [x] I could navigate to various routes in Play mode

Author: gbalint