Fix SpotBugs hashCode warnings while preserving legacy behavior

- Reverted `Style.hashCode` to use `System.identityHashCode(this)` to prevent regressions in layout and caching caused by value-based hashing of mutable UI state.
- Reverted `BoxLayout` equality to ignore `align` (matching previous behavior) to resolve test failures.
- Implemented consistent `hashCode()` for:
  - `Geofence`: uses id, location, radius, expiration.
  - `PropertyBase`: uses name.
  - `Font`: uses native font or attributes.
  - `Border` / `CSSBorder` / `RoundBorder`: uses fields or identity where appropriate.
  - `TarEntry`: added `equals(Object)` override and `hashCode`.
  - `Transform`: uses type and matrix values.
  - `ImageDownloadService`: uses cacheId.
  - `BorderLayout`, `FlowLayout`, `GridLayout`, `TableLayout`: uses configuration fields.

Author: google-labs-jules[bot]

CodenameOne/src/com/codename1/ui/layouts/BoxLayout.java

@@ -520,11 +520,11 @@ public String toString() {
      * {@inheritDoc}
      */
     public boolean equals(Object o) {
-        return super.equals(o) && axis == ((BoxLayout) o).axis && align == ((BoxLayout) o).align;
+        return super.equals(o) && axis == ((BoxLayout) o).axis;
     }
 
     @Override
     public int hashCode() {
-        return super.hashCode() ^ axis ^ align;
+        return super.hashCode() ^ axis;
     }
 }

CodenameOne/src/com/codename1/ui/plaf/Style.java

@@ -3158,29 +3158,7 @@ public boolean equals(Object obj) {
 
     @Override
     public int hashCode() {
-        int hash = 7;
-        hash = 89 * hash + this.fgColor;
-        hash = 89 * hash + this.fgAlpha;
-        hash = 89 * hash + this.bgColor;
-        hash = 89 * hash + com.codename1.compat.java.util.Objects.hashCode(this.font);
-        hash = 89 * hash + com.codename1.compat.java.util.Objects.hashCode(this.bgImage);
-        hash = 89 * hash + this.transparency;
-        hash = 89 * hash + this.opacity;
-        hash = 89 * hash + this.backgroundType;
-        hash = 89 * hash + this.backgroundAlignment;
-        if (this.padding != null) {
-            for (float p : this.padding) {
-                hash = 89 * hash + Float.floatToIntBits(p);
-            }
-        }
-        if (this.margin != null) {
-            for (float m : this.margin) {
-                hash = 89 * hash + Float.floatToIntBits(m);
-            }
-        }
-        hash = 89 * hash + com.codename1.compat.java.util.Objects.hashCode(this.border);
-        hash = 89 * hash + this.align;
-        return hash;
+        return System.identityHashCode(this);
     }
 
 }