fix(chat): lint errors

Author: SisIvanova

src/components/chat/themes/chat.base.scss

@@ -1,7 +1,7 @@
 @use 'styles/common/component';
 @use 'styles/utilities' as *;
 
-//should be removed
+// should be removed
 :host {
   width: 100%;
   height: 600px;

src/components/chat/themes/input.base.scss

@@ -18,7 +18,7 @@
     gap: rem(8px);
 }
 
-//should be changed when the design is ready
+// should be changed when the design is ready
 [part~='dragging'] {
     igc-textarea::part(container) {    
         background: color(gray, 300);

src/components/chat/themes/shared/chat-message.common.scss

@@ -3,7 +3,7 @@
 
 $theme: $material;
 
-//should be changed when the design is ready
+// should be changed when the design is ready
 :host([part~='active']) {
     &::part(message-container) {
         box-shadow: inset 0 0 0 rem(1px) var-get($theme, 'message-color');