41781df1a6
This patch renames `seq1` and `seq2` to `input1` and `input2` in `Strip` and `StripSelection` structs to consist with recent refactors in #132179. It also renames other instances of `seq1` and `seq2` (e.g. local variables) to `strip1` and `strip2` instead. There is only one small breaking change to the Python API with `strips.new_effect()` taking in the new names now. There should be no other functional changes involved. Pull Request: https://projects.blender.org/blender/blender/pulls/138296