fix(linear-progressbar): fix rtl strips

Author: desig9stein

src/components/progress/themes/linear/linear.progress.base.scss

@@ -7,6 +7,12 @@
 :host {
     --track-size: #{rem(4px)};
     --linear-animation-duration: 2000ms;
+    --linear-strips-orientation: -45deg;
+}
+
+:host(:dir(rtl)),
+:host([dir='rtl']) {
+    --linear-strips-orientation: 45deg;
 }
 
 [part~='base'] {

src/components/progress/themes/linear/shared/linear.progress.common.scss

@@ -25,7 +25,7 @@ $theme: $material;
 
     :host([striped][variant='#{$part}']) {
         --striped-bg: #{var-get($theme, $color-key) repeating-linear-gradient(
-            -45deg,
+            var(--linear-strips-orientation),
             var-get($theme, $color-key),
             var-get($theme, $color-key) var(--stripe-size),
             var-get($theme, 'stripes-color') var(--stripe-size),