fix tqdm: Fix progress bar to 100% on successful execution

[ArnavBalyan]

Changes

• Fixes TDQM hook with overrides #845. The h_tqdm.ProgressBar adapter never reached 100% when overrides were passed to .execute() because override nodes are counted in the bar's total but do not trigger run_after_node_execution,
  leaving the bar short of total on a successful run.
• On a successful graph execution we top up progress_bar.n to progress_bar.total inside run_after_graph_execution.. On failure we leave the partial count visible.

How I tested this

• UT

Notes

• N/A

Checklist

• PR has an informative and human-readable title (this will be pulled into the release notes)
• Changes are limited to a single goal (no scope creep)
• Code passed the pre-commit check & code is left cleaner/nicer than when first encountered.
• Any change in functionality is tested
• New functions are documented (with a description, list of inputs, and expected output)
• Placeholder code is flagged / future TODOs are captured in comments
• Project documentation has been updated if adding/changing functionality.

[ArnavBalyan]

cc @skrawcz :)