v4.8.9

What's Changed

• fix: plain chat removed from mobile devices by @nizzyabi in #18377
• perf: /router endpoint perf improvement by @hariombalhara in #18366
• fix: Route Builder field input looses focus on typing by @hariombalhara in #18381
• chore: rely less on autoinfer, use initial data types in consumers by @emrysal in #18359
• perf: getAvailableSlots improvements - 1 by @Udit-takkar in #18382

Full Changelog: v4.8.8...v4.8.9