types(ModalBuilder): fix constructor typings

[almeidx]

Please describe the changes this PR makes and why it should be merged:
Fixes #8468

Status and versioning classification:

• I know how to update typings and have done so, or typings don't need updating

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1 Ignored Deployment

Name	Status	Preview	Updated
discord-js	⬜️ Ignored (Inspect)		Oct 1, 2022 at 1:47PM (UTC)

[codecov]

Codecov Report

Merging #8690 (f6e13cd) into main (c69f512) will increase coverage by 0.03%.
The diff coverage is 100.00%.

❗ Current head f6e13cd differs from pull request most recent head 5ff866b. Consider uploading reports for the commit 5ff866b to get more accurate results

@@            Coverage Diff             @@
##             main    #8690      +/-   ##
==========================================
+ Coverage   86.79%   86.82%   +0.03%     
==========================================
  Files          85       85              
  Lines        8777     8797      +20     
  Branches     1109     1113       +4     
==========================================
+ Hits         7618     7638      +20     
  Misses       1117     1117              
  Partials       42       42              

Flag	Coverage Δ
builders	100.00% <ø> (ø)
collection	100.00% <ø> (ø)
proxy	80.46% <ø> (ø)
rest	92.08% <100.00%> (+0.07%)	⬆️
utilities	100.00% <ø> (ø)
voice	63.83% <ø> (ø)
ws	60.47% <ø> (ø)

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Impacted Files	Coverage Δ
packages/rest/src/lib/RequestManager.ts	90.34% <100.00%> (+0.09%)	⬆️
...ackages/rest/src/lib/handlers/SequentialHandler.ts	86.44% <100.00%> (+0.41%)	⬆️

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