fix: typo for the builder error type

[JosephLenton]

Which issue does this PR close?

There is no ticket for this (I can open one if it is really needed). This is a very small nitpick QoL improvement, by changing the wording for an error.

The typo fixes the phrase ... can't cast to got ..., by adding a comma and making the rest a bit clearer.

Rationale for this change

• The error doesn't read as natural english with ... can't cast to got ....
• I've added more clarity on what got and for are, by changing to data of type and field of type.

What changes are included in this PR?

• Rewording an error message.

Are these changes tested?

• I added a test to confirm the error message looks right.

Are there any user-facing changes?

• A user facing error message has changed.
• No documentation changes are needed.
• No API breaking changes are in this PR.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.91%. Comparing base (3e3a92d) to head (7d82991).
⚠️ Report is 10 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #24052      +/-   ##
==========================================
- Coverage   80.91%   80.91%   -0.01%     
==========================================
  Files        1103     1103              
  Lines      377219   377230      +11     
  Branches   377219   377230      +11     
==========================================
- Hits       305244   305234      -10     
- Misses      53775    53793      +18     
- Partials    18200    18203       +3     

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[nuno-faria]

Thanks @JosephLenton, I leave a small suggestion below.

[JosephLenton]

@nuno-faria I think you will need to approve this a second time please as I've pushed up your reword.

[nuno-faria]

Thanks @JosephLenton, it's approved. Let's see if someone else has anything else to add before merging.