fix: quick succession creation of identical posts

[katsukixyz]

Resolves #193.

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Coverage report for web

St.:grey_question:	Category	Percentage	Covered / Total
🔴	Statements	27.42% (-0.05% 🔻)	450/1641
🔴	Branches	13.07% (-0.05% 🔻)	63/482
🔴	Functions	14.17% (-0.03% 🔻)	69/487
🔴	Lines	22.97% (-0.05% 🔻)	328/1428

Show files with reduced coverage 🔻

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St.^{:grey_question:}

| File | Statements | Branches | Functions | Lines | | :----------------------------------------------------------------------------------------------------------------------------------------------------: | :-------------------------------------------------------------------------------------------------- | :------------------------------------------------------------- | :------- | :-------- | :------------------------------------------------------------ | | 🔴 |

`...` / PostCreationModal.tsx

|

11.46% (-0.37% 🔻)

| 0% | 0% |

11.7% (-0.39% 🔻)

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Test suite run success

37 tests passing in 5 suites.

Report generated by 🧪jest coverage report action from a6c5cbe3d93b82030ddcb39b205aaa327d6d4264