fix: remove number parsing

this code is problematic and violates the mParticle schema.

Author: samdozor

android-core/src/main/java/com/mparticle/internal/database/services/MParticleDBManager.java

@@ -530,7 +530,7 @@ public Map<String, Object> getUserAttributeSingles(long mpId) {
             for (Map.Entry<String, String> stringifiedAttribute : stringifiedAttributes.entrySet()) {
                 String key = stringifiedAttribute.getKey();
                 String value = stringifiedAttribute.getValue();
-                typedAttributes.put(key, MPUtility.toNumberOrString(value));
+                typedAttributes.put(key, value);
             }
             return typedAttributes;
         }