[ncl] Fix most of the TS errors adding types (#10229)

# Why

NCL is full of errors.

# How

Went through all of them and fixed them as it made sense in my opinion.

# Test Plan

TS no long

[ncl] Fix most of the TS errors adding types (#10229)

# Why

NCL is full of errors.

# How

Went through all of them and fixed them as it made sense in my opinion.

# Test Plan

TS no longer complains that much.

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