improvments in themes to fix placeholder text colors and some bugs/typos

apps/remix-ide/src/assets/css/themes/remix-candy_ikhg4m.css

@@ -1813,7 +1813,7 @@ pre code {
   box-shadow: 0px 0px 5px #00bbff;
 }
 .form-control::placeholder {
-  color: #1b1d24;
+  color: #747B90;
   opacity: 1;
 }
 .form-control:disabled,

apps/remix-ide/src/assets/css/themes/remix-hacker_owl.css

@@ -42,7 +42,7 @@
   --theme-bg-btn-dark--hover: #033863;
   --theme-border-tab: 1px solid #274052;
   --theme-border-default: 1px solid #07121ca6;
-  --theme-form-placeholder: #dfe1ea;
+  --theme-form-placeholder: #a9aec5;
 
   --font-family-sans-serif: "Saira", -apple-system, BlinkMacSystemFont,
     "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif,
@@ -3256,7 +3256,7 @@ input[type="submit"].btn-block {
   display: block;
   width: 1rem;
   height: 1rem;
-  posaira-events: none;
+  pointer-events: none;
   content: "";
   background-color: #2e3145;
   border: #51536b solid 1px;

apps/remix-ide/src/assets/css/themes/remix-light_powaqg.css

@@ -1809,7 +1809,7 @@ pre code {
   box-shadow: 0px 0px 5px #00bbff;
 }
 .form-control::placeholder {
-  color: #1b1d24;
+  color: #747B90;
   opacity: 1;
 }
 .form-control:disabled,

apps/remix-ide/src/assets/css/themes/remix-midcentury_hrzph3.css

@@ -1791,7 +1791,7 @@ pre code {
   font-weight: 400;
   line-height: 1.5;
   color: #495057;
-  background-color: #var(--custom-select);
+  background-color: var(--custom-select);
   background-clip: padding-box;
   border: 1px solid #ced4da;
   border-radius: 2px !important;
@@ -1814,7 +1814,7 @@ pre code {
   box-shadow: 0px 0px 5px #00bbff;
 }
 .form-control::placeholder {
-  color: #1b1d24;
+  color: #9b8a85;
   opacity: 1;
 }
 .form-control:disabled,

apps/remix-ide/src/assets/css/themes/remix-pride.css

@@ -1812,7 +1812,7 @@ pre code {
   box-shadow: 0px 0px 5px #00bbff;
 }
 .form-control::placeholder {
-  color: #1b1d24;
+  color: #747B90;
   opacity: 1;
 }
 .form-control:disabled,

apps/remix-ide/src/assets/css/themes/remix-violet.css

@@ -1809,7 +1809,7 @@ pre code {
   box-shadow: 0px 0px 5px #00bbff;
 }
 .form-control::placeholder {
-  color: #1b1d24;
+  color: #747B90;
   opacity: 1;
 }
 .form-control:disabled,