Use good old emblem-important icon

The new version from Breeze doesn't look nice in the way the
plasmoid uses this icon.

plasmoid/package/contents/ui/DirectoriesPage.qml

@@ -71,7 +71,7 @@ ColumnLayout {
                             }
                             TinyButton {
                                 id: errorsButton
-                                iconSource: "emblem-important"
+                                iconSource: ":/icons/hicolor/scalable/emblems/emblem-important-old.svg"
                                 tooltip: qsTr("Show errors")
                                 visible: pullErrorCount > 0
                                 onClicked: {

plasmoid/package/contents/ui/main.qml

@@ -58,8 +58,9 @@ Item {
         plasmoid.setAction("showWebUI", qsTr("Web UI"), "internet-web-browser")
         plasmoid.setAction("showSettings", qsTr("Settings"), "configure")
         plasmoid.setAction("showLog", qsTr("Log"), "text-x-generic")
-        plasmoid.setAction("showErrors", qsTr("Internal errors"),
-                           "emblem-important")
+        plasmoid.setAction(
+                    "showErrors", qsTr("Internal errors"),
+                    ":/icons/hicolor/scalable/emblems/emblem-important-old.svg")
         plasmoid.setAction("rescanAllDirs", qsTr("Rescan all directories"),
                            "folder-sync")
         plasmoid.setAction("restartSyncthing", qsTr("Restart Syncthing"),

widgets/resources/icons/hicolor/scalable/emblems/emblem-important-old.svg

@@ -0,0 +1,19 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 22 22">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#4d4d4d;
+      }
+      </style>
+  </defs>
+    <path
+       style="opacity:1;fill:#da4453;fill-opacity:1;stroke:none"
+       d="m 12,4 -4.5,8 -4.5,8 9,0 9,0 -4.5,-8 z m -1,5 2,0 0,6 -2,0 z m 0,7 2,0 0,2 -2,0 z"
+       id="path4156"
+       class="ColorScheme-Text"
+        />
+    <path
+       style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:2;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+       d="M 11 9 L 11 15 L 13 15 L 13 9 L 11 9 z M 11 16 L 11 18 L 13 18 L 13 16 L 11 16 z "
+       id="rect3348" />
+</svg>

widgets/resources/syncthingwidgetsicons.qrc

@@ -13,5 +13,6 @@
         <file>icons/hicolor/scalable/fa/cloud-upload-alt-solid.svg</file>
         <file>icons/hicolor/scalable/actions/globe.svg</file>
         <file>icons/hicolor/scalable/places/user-home.svg</file>
+        <file>icons/hicolor/scalable/emblems/emblem-important-old.svg</file>
     </qresource>
 </RCC>