fix(jwt): Fix ttl in claims

[dragonmantank]

Description

When passing in a ttl to generate a new token, we accidentally leave the ttl parameter in the claims. This is causing a problem with tokens being rejected. The exp is calculated properly, but we just leave the additional ttl claim there due to object unpacking.

Motivation and Context

This breaks JWT validation

Testing Details

Added a unit test

Example Output or Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov-commenter]

Codecov Report

Merging #846 (9f5fc1a) into 3.x (8760b0f) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##              3.x     #846      +/-   ##
==========================================
+ Coverage   83.42%   83.44%   +0.02%     
==========================================
  Files         119      119              
  Lines        1484     1486       +2     
  Branches      282      283       +1     
==========================================
+ Hits         1238     1240       +2     
  Misses        245      245              
  Partials        1        1              

Files Changed	Coverage Δ
packages/jwt/lib/jwt.ts	100.00% <100.00%> (ø)

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