fix(WebSocketShard): dispatch race condition

[didinele]

Please describe the changes this PR makes and why it should be merged:
Closes #8726

This is quite the "easy fix", by just removing the guard on dispatch events, since it was quite frankly unnecessary for a lib as low level as ws is.

Possibly related to #8558 (i.e. might improve the behavior there; otherwise that issue will need additional research)

Status and versioning classification:

• Code changes have been tested against the Discord API, or there are no code changes
• I know how to update typings and have done so, or typings don't need updating

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2 Ignored Deployments

Name	Status	Preview	Updated
discord-js	⬜️ Ignored (Inspect)		Oct 10, 2022 at 2:48PM (UTC)
discord-js-guide	⬜️ Ignored (Inspect)		Oct 10, 2022 at 2:48PM (UTC)

[codecov]

Codecov Report

Merging #8731 (5dbd96e) into main (3ed668e) will increase coverage by 0.01%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main    #8731      +/-   ##
==========================================
+ Coverage   86.83%   86.85%   +0.01%     
==========================================
  Files          87       87              
  Lines        8810     8808       -2     
  Branches     1117     1117              
==========================================
  Hits         7650     7650              
+ Misses       1118     1116       -2     
  Partials       42       42              

Flag	Coverage Δ
builders	100.00% <ø> (ø)
collection	100.00% <ø> (ø)
proxy	81.53% <ø> (ø)
rest	92.06% <ø> (ø)
util	100.00% <ø> (ø)
utilities	100.00% <ø> (ø)
voice	63.70% <ø> (ø)
ws	59.83% <0.00%> (+0.08%)	⬆️

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Impacted Files	Coverage Δ
packages/ws/src/ws/WebSocketShard.ts	23.39% <0.00%> (+0.08%)	⬆️

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