perf(NODE-5928): consolidate signal use and abort promise wrap

[nbbeeken]

Description

What is changing?

• Consolidate the use of signal in connection layer
• Create one promise to represent aborting the signal and reuse it

Is there new documentation needed for these changes?

What is the motivation for this change?

Improve the performance of the socketWrite function

Double check the following

• Ran npm run check:lint script
• Self-review completed using the steps outlined here
• PR title follows the correct format: type(NODE-xxxx)[!]: description
  • Example: feat(NODE-1234)!: rewriting everything in coffeescript
• Changes are covered by tests
• New TODOs have a related JIRA ticket