Remove redundant button styles and use proper button classes (#30929)

* remove redundant button styles and use proper button classes

* remove import for contact_us css

* fix view plans button to be xs

* tweak to disabled state on save button in floating bar

* change contact us to tertiary button like before

* updated btn-full on free edition right panel

* update contact button to be primary when shown in the trial card

* fix issue with hover state on save changes panel error state

* fix style lint issues

* update snapshots

* fixed a few license page buttons

* fix lint issue

* Update index.test.tsx.snap

* add empty end lines

* fixed scope of css so it doesn't affect product switcher

* upate button font size for xs, update bg color for button in announce bar

* fix lint error

* update missed cancel buttons to use proper classes

* fixed text spec to find the right button

* updated snapshots

* fix issue with test on cancel button

* update snapshots

webapp/platform/components/src/tour_tip/tour_tip.scss

@@ -80,10 +80,6 @@ $z-index-tour-tips-backdrop: 1250;
                     &:focus {
                         box-shadow: inset 0 0 0 2px var(--sidebar-text-active-border);
                     }
-
-                    .icon-chevron-right::before {
-                        margin-right: -7px;
-                    }
                 }
 
                 &.btn-tertiary {
@@ -101,10 +97,6 @@ $z-index-tour-tips-backdrop: 1250;
                     &:focus {
                         box-shadow: inset 0 0 0 2px var(--sidebar-text-active-border);
                     }
-
-                    .icon-chevron-left::before {
-                        margin-left: -7px;
-                    }
                 }
 
                 &.btn-icon {