[pickers] Include community package themeAugmentation in pro package types

[LukasTy]

Fixes #5965

In docs we mention that it's enough to import pro package types to include augmentation for all pickers, but that's not the case at the moment.

[mui-bot]

These are the results for the performance tests:

Test case	Unit	Min	Max	Median	Mean	σ
Filter 100k rows	ms	336.5	703.4	639.7	554.62	143.336
Sort 100k rows	ms	491.7	1,081.5	491.7	819.36	219.903
Select 100k rows	ms	199.7	503.2	259.3	296.08	110.074
Deselect 100k rows	ms	131.4	197.3	183.9	168.76	25.884

Generated by 🚫 dangerJS against a3da280