forbid DynamicReigster as a wire

[albi3ro]

Context:

There was confusion around code like:

with allocate(1) as reg:
    qml.CNOT((0, reg))

which lead to a wire being a DynamicRegister, rather than the DynamicWire inside it.

Description of the Change:

Makes DynamicRegister unhashable so that scenario cannot occur.

Benefits:

Reduced confusion.

Possible Drawbacks:

Related GitHub Issues:

[sc-98352]

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.68%. Comparing base (71763f7) to head (5cf2aed).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #8151   +/-   ##
=======================================
  Coverage   99.68%   99.68%           
=======================================
  Files         548      548           
  Lines       56749    56751    +2     
=======================================
+ Hits        56573    56575    +2     
  Misses        176      176           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[dwierichs]

Nice QoL improvement, thanks @albi3ro :)