fix: wrap Form rules in str-chat scope (#337)

Author: arnautov-anton

src/v2/styles/Form/Form-theme.scss

@@ -1,17 +1,20 @@
-.str-chat__form-field-error {
-  font-size: 0.75rem;
-  color: var(--str-chat__danger-color)
-}
+.str-chat {
+  // hide spin buttons form input of type number
+  /* Chrome, Safari, Edge, Opera */
+
+  input::-webkit-outer-spin-button,
+  input::-webkit-inner-spin-button {
+    -webkit-appearance: none;
+    margin: 0;
+  }
 
-// hide spin buttons form input of type number
-/* Chrome, Safari, Edge, Opera */
-input::-webkit-outer-spin-button,
-input::-webkit-inner-spin-button {
-  -webkit-appearance: none;
-  margin: 0;
+  /* Firefox */
+  input[type='number'] {
+    -moz-appearance: textfield;
+  }
 }
 
-/* Firefox */
-input[type=number] {
-  -moz-appearance: textfield;
-}
+.str-chat__form-field-error {
+  font-size: 0.75rem;
+  color: var(--str-chat__danger-color);
+}