Treat all non-empty non-NORMAL spot types as qrt

We use qrt strikethrough on all invalid spots, like TEST or QRT.
It's most straightforward to simply check for the normal type of spot,
which will either be unspecified, empty, or NORMAL.

src/web/main.js

@@ -294,7 +294,7 @@ async function enrichSpots(spots,
         if (!["CW", "SSB", "FM", "FT8", "DATA"].includes(spot.modeType))
             spot.modeType = "OTHER";
         spot.details = getLocationDetailsFunc(spot);
-        spot.qrt = spot.type?.toLowerCase() === 'qrt';
+        spot.type = ("type" in spot) ? spot.type : null;
     });
 
     // find duplicates

src/web/pota.js

@@ -22,7 +22,7 @@ async function updatePotaTable()
 
         if (spot.duplicate)
             row.classList.add('duplicate-row');
-        if (spot.qrt) {
+        if (spot.type && spot.type !== "" && spot.type !== "NORMAL") { // "" is a normal spot, other values are not
             row.classList.add('duplicate-row');
             row.classList.add('qrt-row');
         }

src/web/sota.js

@@ -29,7 +29,7 @@ async function updateSotaTable()
 
         if (spot.duplicate)
             row.classList.add('duplicate-row');
-        if (spot.qrt) {
+        if (spot.type && spot.type !== "" && spot.type !== "NORMAL") { // "" is a normal spot, other values are not
             row.classList.add('duplicate-row');
             row.classList.add('qrt-row');
         }