Resolve default export warnings from Webpack

Webpack was printing several warnings about missing default exports,
particularly from components, where we auto-generate a default import via the
component index.

As part of this, the emoji picker recent handling (which is not a component) is
moved elsewhere to avoid the generated import.

src/components/views/auth/InteractiveAuthEntryComponents.js

@@ -641,7 +641,7 @@ const AuthEntryComponents = [
     TermsAuthEntry,
 ];
 
-export function getEntryComponentForLoginType(loginType) {
+export default function getEntryComponentForLoginType(loginType) {
     for (const c of AuthEntryComponents) {
         if (c.LOGIN_TYPE == loginType) {
             return c;