[WIP] Fix Bugs w/ Current Correction and Vay Deposition

[EZoni]

Fix #3232. Filtering will also need to be moved to the right locations, though (depends on another open PR).

To-do: merge #3302 first and rebase afterwards.

Currently not supporting (to be addressed in future PRs):

• Vay deposition and current correction at the same time;
• Vay deposition with periodic single box (cumulative sums to be fixed).

Tests:

• Example with 2D Langmuir test with 2x2 grids, with current correction and direct deposition (inputs_2d.txt):

• Example with RZ LWFA with 1x6 grids, with current correction and direct deposition (input deck attached as first test case reported in #3232, modified by adding warpx.numprocs = 1 6 to have one grid per GPU):