Fix Float32 constraints in poly pipeline

[asinghvi17]

Description

Fixes #4267

Harvests type-level float type (T) and dimensionality (N) information down the poly pipeline so we can assign meshes the correct types.

With this changeset, this MWE now works.

polygons = Observable(Polygon{2,Float64}[])
poly(polygons)
push!(polygons[], Polygon([Point(1.0, 2.0), Point(2.0, 3.0), Point(3.0, 2.0)]))
notify(polygons)

This needs a slight change for GeometryBasics v0.5, which I'm happy to PR to the breaking-v0.22 branch if we do merge this to master. This also fixes the upstream bug in MakieDraw.

Type of change

Delete options that do not apply:

• Bug fix (non-breaking change which fixes an issue)

Checklist

• Added an entry in CHANGELOG.md (for new features and breaking changes)
• Added or changed relevant sections in the documentation
• Added unit tests for new algorithms, conversion methods, etc.
• Added reference image tests for new plotting functions, recipes, visual options, etc.

[MakieBot]

Benchmark Results

SHA: 7187d4cd961f6836b3cc278580496de108980e7f

Warning

These results are subject to substantial noise because GitHub's CI runs on shared machines that are not ideally suited for benchmarking.

[ffreyer]

I'd rather have this based on breaking since we are planning to merge that soon.