fix: mutating ManyArray should handle duplicates gracefully (with deprecation)

@types/ember-data-qunit-asserts/index.d.ts

@@ -19,7 +19,7 @@ declare global {
   }
 
   interface Assert {
-    expectDeprecation(options: { id: string; count: number; until?: string }): void;
+    expectDeprecation(options: DeprecationConfig, label?: string): void;
     expectDeprecation(callback: () => unknown, options: DeprecationConfig | string | RegExp): Promise<void>;
     expectNoDeprecation(callback: () => unknown): Promise<void>;
     expectWarning(callback: () => unknown, options: WarningConfig | string | RegExp): Promise<void>;

ember-data-types/cache/cache.ts

@@ -115,7 +115,7 @@ export interface Cache {
    * An implementation might want to do this because
    * de-referencing records which read from their own
    * blob is generally safer because the record does
-   * not require retainining connections to the Store
+   * not require retaining connections to the Store
    * and Cache to present data on a per-field basis.
    *
    * This generally takes the place of `getAttr` as

packages/graph/src/-private/-diff.ts

@@ -176,7 +176,7 @@ export function diffCollection(
 
       if (DEBUG) {
         deprecate(
-          `Expected all entries in the relationship ${relationship.definition.type}:${relationship.definition.key} to be unique, see log for a list of duplicate entry indeces`,
+          `Expected all entries in the relationship ${relationship.definition.type}:${relationship.definition.key} to be unique, see log for a list of duplicate entry indices`,
           false,
           {
             id: 'ember-data:deprecate-non-unique-relationship-entries',

packages/json-api/src/-private/cache.ts

@@ -388,7 +388,7 @@ export default class JSONAPICache implements Cache {
    * An implementation might want to do this because
    * de-referencing records which read from their own
    * blob is generally safer because the record does
-   * not require retainining connections to the Store
+   * not require retaining connections to the Store
    * and Cache to present data on a per-field basis.
    *
    * This generally takes the place of `getAttr` as