Make mypy happy when initializing TypeDicts from coregistration methods

[rhugonnet]

See for instance here:

xdem/xdem/coreg/biascorr.py

Line 122 in 02c2026

super().__init__(meta=meta_bin) # type: ignore

A lot of other instances added in #530.

The TypedDict are super useful to declare the expected type of keys and values, but initializing them without this error is a hassle. Maybe I'm simply doing something wrong...

I found some related posts, but nothing that helped me solving this issue:
https://stackoverflow.com/questions/73242556/typeddict-class-is-an-incompatible-type-for-function-expecting-dict
python/mypy#13122

An important note:
Most users rely on the fact that TypedDict always have a fixed number of keys, but here we don't (argument total=False of TypedDict).