Add smol_str feature to bevy_reflect dependency for bevy_text.

[andriyDev]

Objective

• cargo b -p bevy_text fails to compile due to missing Reflect impl on SmolStr.

Solution

• Add the smol_str feature to bevy_texts bevy_reflect dependency.

Testing

• cargo b -p bevy_text fails to compile on main, but it succeeds with this PR.

[kfc35]

This looks related to proposed solutions in #22497 just fyi

[mnmaita]

Oh! Thanks for the heads up, I'll check if this also fixes the common_api build issue and close my PR if so.

[mnmaita]

Works and also fixes #22497, thanks!