fix: prevent HTML encoding of forward slash in booking confirmation email subtitle

[naaa760]

What does this PR do?

• fixes forward slashes in organizer names being HTML-encoded as "/" in the booking confirmation email subtitle. Adds interpolation: { escapeValue: false } to the translation options.

fix: #26938

Visual Demo

Before: "Carina / Test still needs to confirm or reject the booking."
After: "Carina / Test still needs to confirm or reject the booking."

How should this be tested?

• Create a booking with an organizer name containing a forward slash (e.g., "Carina / Test") and verify the email subtitle displays correctly without HTML encoding.

[cubic-dev-ai]

No issues found across 1 file

[anikdhabal]

Thanks for your work, going with this one:- #26949