feat: Add support for dark mode in more pages

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

app/javascript/v3/views/auth/signup/components/AuthSubmitButton.vue

@@ -1,55 +0,0 @@
-<template>
-  <woot-button
-    size="expanded"
-    color-scheme="primary"
-    class-names="submit--button"
-    :is-disabled="isDisabled"
-    :is-loading="isLoading"
-    @click="onClick"
-  >
-    {{ label }}
-    <fluent-icon :icon="icon" size="18" />
-  </woot-button>
-</template>
-
-<script>
-export default {
-  props: {
-    label: {
-      type: String,
-      default: '',
-    },
-    icon: {
-      type: String,
-      default: '',
-    },
-    isDisabled: {
-      type: Boolean,
-      default: false,
-    },
-    isLoading: {
-      type: Boolean,
-      default: false,
-    },
-  },
-  methods: {
-    onClick() {
-      this.$emit('click');
-    },
-  },
-};
-</script>
-
-<style lang="scss" scoped>
-.submit--button {
-  align-items: center;
-  display: flex;
-  margin: 0 0 var(--space-normal) 0;
-
-  &::v-deep .button__content {
-    align-items: center;
-    display: flex;
-    justify-content: center;
-  }
-}
-</style>