Bug 1918145 - Hide upstream password reveal button in Thunderbird password fields. r=aleca

Differential Revision: https://phabricator.services.mozilla.com/D221838

--HG--
extra : moz-landing-system : lando

mail/themes/shared/mail/common.css

@@ -127,3 +127,7 @@ tab[selected] {
   background-color: var(--in-content-button-background);
   border-bottom-color: var(--in-content-accent-color);
 }
+
+input[type="password"] {
+  -moz-appearance: textfield;
+}

mail/themes/shared/mail/themeableDialog.css

@@ -204,6 +204,10 @@ html|input[type="color"] {
   padding: 4px;
 }
 
+html|input[type="password"] {
+  -moz-appearance: textfield;
+}
+
 #resetColor {
   list-style-image: url("chrome://messenger/skin/icons/forget.svg");
   -moz-context-properties: fill;