fix plugin memory leaks

[akshay-gupta7]

Why does this PR exist?

Closes #0000

What does this pull request do?

Testing this change

Additional Notes (if any)

[changeset-bot]

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Latest commit: e6c9f50

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[github-actions]

⤵️ 📦 ✨ The artifact was successfully created! Want to test it? Download it here 👀 🎁

[github-actions]

Commit SHA:e94b2bf0a60aff84c64f7b173ce7692a72ed81ce

Test coverage results 🧪

Code coverage diff between base branch:main and head branch: fix-memory-leaks 

Status	File	% Stmts	% Branch	% Funcs	% Lines
🔴	total	67.15 (0.02)	57.67 (-0.05)	63.85 (-0.13)	67.54 (0.03)
🔴	packages/tokens-studio-for-figma/src/app/store/models/tokenState.tsx	63.29 (-0.21)	51.29 (0)	75.67 (-0.85)	63.93 (-0.22)
🔴	packages/tokens-studio-for-figma/src/plugin/createLocalVariablesInPlugin.ts	51.28 (-1.84)	38.09 (0)	40 (-26.66)	51.35 (-1.98)
🔴	packages/tokens-studio-for-figma/src/plugin/createLocalVariablesWithoutModesInPlugin.ts	37.77 (0.93)	35 (0)	14.28 (-5.72)	39.53 (0.65)
🔴	packages/tokens-studio-for-figma/src/plugin/processTextStyleProperty.ts	88.88 (-11.12)	75 (-7.14)	100 (0)	88 (-12)
🟢	packages/tokens-studio-for-figma/src/plugin/pullStyles.ts	95.15 (0.38)	76.31 (2.31)	95.34 (-0.11)	95.51 (-0.04)
🟢	packages/tokens-studio-for-figma/src/plugin/setValuesOnVariable.ts	94.23 (3.99)	78 (-3.63)	100 (0)	94.23 (4.23)
🔴	packages/tokens-studio-for-figma/src/utils/findBoundVariable.ts	62.5 (0)	66.66 (-8.34)	66.66 (0)	62.5 (-8.92)

[github-actions]

Commit SHA:e94b2bf0a60aff84c64f7b173ce7692a72ed81ce
Current PR reduces the test coverage percentage by 1 for some tests