fix: rest of state tooltip

closes #1030

Author: sgratzl

src/specs/mapSpec.ts

@@ -136,6 +136,17 @@ function genMegaLayer(withStates: string | null = null): NormalizedUnitSpec {
         type: 'quantitative',
       },
     },
+    params: [
+      {
+        name: 'hover_mega',
+        select: {
+          type: 'point',
+          on: 'mouseover, click',
+          clear: 'view:mouseout',
+          fields: ['geo_value'],
+        },
+      },
+    ],
   };
 }
 
@@ -191,7 +202,7 @@ function genMegaHoverLayer(alsoOnCounties = false): NormalizedUnitSpec {
               test: {
                 or: [
                   {
-                    param: 'hover',
+                    param: 'hover_mega',
                     empty: false,
                   },
                   'hover && hover.geo_value && hover.geo_value[0] && slice(hover.geo_value[0], 0, 2) === slice(datum.id, 0, 2)',
@@ -200,7 +211,7 @@ function genMegaHoverLayer(alsoOnCounties = false): NormalizedUnitSpec {
               value: 1,
             }
           : {
-              param: 'hover',
+              param: 'hover_mega',
               empty: false,
               value: 1,
             },
@@ -279,6 +290,7 @@ function genLevelLayer({
         select: {
           type: 'point',
           on: 'mouseover, click',
+          clear: 'view:mouseout',
           fields: ['geo_value'],
         },
         value: initialRegion