SGM-7030 - Bug: The LeanData Bookit Integration not working correctly

[gitstart-app[bot]]

This PR was created by GitStart to address the requirements from this ticket: SGM-7030. This ticket was imported from: SGM-7030

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Description:

Fixes multiple initialisation bug by the LeanData Bookit Integration form

• [Sourcegraph Issue] https://github.com/sourcegraph/about/issues/7030
• [Ticket] https://clients.gitstart.com/sourcegraph/3436/tickets/SGM-7030

Demo:

https://www.loom.com/share/c662f1af7e4441a5bd6dca5c4f9a8fdb?sid=d335baa4-9e2e-4e4d-aae1-e2cf032b5230

Test plan:

Check demo video

Test cases:

• Book it form should load as expected
• On submitting form "multiple route submission error should not appear"

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