fix a bunch of <button>s acting as submit buttons breaking enter key

src/components/emoji_input/emoji_input.vue

src/components/mfa_form/recovery_form.vue

src/components/mfa_form/totp_form.vue

src/components/scope_selector/scope_selector.vue

src/components/search/search.vue

src/components/search_bar/search_bar.vue

src/components/tab_switcher/tab_switcher.js