Fixes stale cached locations after using /settpr (#6305)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: JRoy <10731363+JRoy@users.noreply.github.com>

Author: Copilot

Essentials/src/main/java/com/earth2me/essentials/RandomTeleport.java

@@ -69,6 +69,8 @@ public Location getCenter(final String name) {
     public void setCenter(final String name, final Location center) {
         config.setProperty(locationKey(name, "center"), center);
         config.save();
+        // Clear cached locations since center changed
+        this.getCachedLocations(name).clear();
     }
 
     public double getMinRange(final String name) {
@@ -78,6 +80,8 @@ public double getMinRange(final String name) {
     public void setMinRange(final String name, final double minRange) {
         config.setProperty(locationKey(name, "min-range"), minRange);
         config.save();
+        // Clear cached locations since min range changed
+        this.getCachedLocations(name).clear();
     }
 
     public double getMaxRange(final String name) {
@@ -87,6 +91,8 @@ public double getMaxRange(final String name) {
     public void setMaxRange(final String name, final double maxRange) {
         config.setProperty(locationKey(name, "max-range"), maxRange);
         config.save();
+        // Clear cached locations since max range changed
+        this.getCachedLocations(name).clear();
     }
 
     public String getDefaultLocation() {