WIP: Fix: Wave deployment input data

[sbkok]

Why?

When generating the waves, it does so in the input generation. When it was shared to the actual deployment of the CodePipeline stack, the data types did not match.

What?

This pull request adds comments and restructures the wave generation at the input side to make it work.

This PR also fixes a typo and optimizes the generation of waves by using yield only.

Co-authored by: StewartW

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