bumping js-slang

[martin-henz]

See: source-academy/js-slang#1600

Fixes #2700
Fixes #2705
Fixes #2781
This might solve #2716, but unable to test due to issue #2883.

Changes

• Any object created in the stash now also appear inside the environment, next to the correct frame
• Revamp removePreludeEnv() behavior, it now completely removes any mention of the prelude environment and updates any reference to it correctly
• Revamp dummy binding behavior, it now depends on the objects in the heap of each environment
• Refactored some code to better match the new behavior
• Round values returned by getTextWidth so test cases do not have floating point irregularities

Problems

• Any arrays or closures created from calling stream_tail may not have the correct environment, there is a workaround present but the results may be unexpected
  • This is due to stream_tail being a built-in function, a future js-slang version might change this

[coveralls]

Pull Request Test Coverage Report for Build 8480401789

Details

• 163 of 175 (93.14%) changed or added relevant lines in 13 files are covered.
• 11 unchanged lines in 4 files lost coverage.
• Overall coverage increased (+0.3%) to 35.544%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/features/cseMachine/components/values/FnValue.tsx	13	14	92.86%
src/features/cseMachine/components/values/PrimitiveValue.tsx	7	8	87.5%
src/features/cseMachine/CseMachineUtils.ts	41	43	95.35%
src/features/cseMachine/CseMachineLayout.tsx	59	63	93.65%
src/features/cseMachine/components/values/UnassignedValue.tsx	5	9	55.56%

Files with Coverage Reduction	New Missed Lines	%
src/features/cseMachine/components/values/UnassignedValue.tsx	1	63.16%
src/features/cseMachine/CseMachineLayout.tsx	2	66.77%
src/features/cseMachine/components/Binding.tsx	3	88.89%
src/features/cseMachine/components/arrows/ArrowFromText.tsx	5	44.0%

Totals
Change from base Build 8480300677:	0.3%
Covered Lines:	5174
Relevant Lines:	13605

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💛 - Coveralls

[RichDom2185]

I don't have the time to review this, but to not block the breaking changes for the development teams, let's merge it first since CI is passing.