feat: make pulse compensation not to run out of waveform memory

Explanation of changes

Decrease PULSE_STITCHING_DURATIONto trigger stitching of the square pulses responsible for the pulse compensation to a long square pulse. The respective tests are modified to reflect the change in the assembly layer.

Motivation of changes

The reason of this change is to save up memory during execution of pulse compensation. It is identified that when a lot of short compensating pulses are stored, the system runs out of waveform memory.

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Merge checklist

See also merge request guidelines

• Merge request has been reviewed (in-depth by a knowledgeable contributor), and is approved by a project maintainer.
• New code is covered by unit tests (or N/A).
• New code is documented and docstrings use numpydoc format (or N/A).
• New functionality: considered making private instead of extending public API (or N/A).
• Public API changed: added @deprecated and entry in deprecated code suggestions (or N/A).
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• Pipeline fix or dependency update: post in #software-for-developers channel to merge main back in or update local packages (or N/A).
• Tested on hardware (or N/A).
• CHANGELOG.md for breaking changes and AUTHORS.md have been updated (or N/A).
• Update Hardware backends documentation if backend interface change or N/A
• Check whether performance is significantly affected by looking at the Performance metrics results.
• Windows tests in CI pipeline pass (manually triggered by maintainers before merging).
  • Maintainers do not hit Auto-merge, we need to actively check as manual tests do not block pipeline

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