fix: OAS3 array item value input (#4729)

* fix: OAS3 array item value input
* linter fixes

test/e2e/scenarios/bugs/frozen-array-input.js

@@ -0,0 +1,44 @@
+describe("bug: unable to change array input", function () {
+  let mainPage
+  beforeEach(function (client, done) {
+    mainPage = client
+      .url("localhost:3230")
+      .page.main()
+
+    client.waitForElementVisible(".download-url-input:not([disabled])", 5000)
+      .clearValue(".download-url-input")
+      .setValue(".download-url-input", "/test-specs/bugs/frozen-array-input.yaml")
+      .click("button.download-url-button")
+
+    done()
+  })
+  afterEach(function (client, done) {
+    done()
+  })
+  it("consistently displays a model's name regardless of expansion state", function (client) {
+    client.waitForElementVisible(".opblock-summary-description", 10000)
+      .assert.containsText("span.opblock-summary-path > a > span", "/test")
+      .click("#operations-default-get_test")
+      .pause(500)
+      .click("button.btn.try-out__btn")
+      .elements("css selector", ".json-schema-form-item", function (result) {
+        this.assert.equal(result.value.length, 2, "initial number of array item inputs")
+      })
+      .click(".json-schema-form-item-add")
+      .elements("css selector", ".json-schema-form-item", function (result) {
+        this.assert.equal(result.value.length, 3, "number of array item inputs after clicking add")
+      })
+      .click(".json-schema-form-item-remove")
+      .click(".json-schema-form-item-remove")
+      .click(".json-schema-form-item-remove")
+      .elements("css selector", ".json-schema-form-item", function (result) {
+        this.assert.equal(result.value.length, 0, "number of array item inputs after removing all items")
+      })
+      .click(".json-schema-form-item-add")
+      .setValue(".json-schema-form-item input", "myValue123")
+      .click("button.execute")
+      .pause(100)
+      .assert.containsText(".request-url pre", "http://localhost:3230/test?fields=myValue123")
+    client.end()
+  })
+})

test/e2e/specs/bugs/frozen-array-input.yaml

@@ -0,0 +1,35 @@
+openapi: '3.0.0'
+info:
+  description: >-
+    Repro API
+  title: Repro API
+  version: '1.0'
+paths:
+  /test:
+    get:
+      summary: Test get
+      parameters:
+        - name: fields
+          in: query
+          required: false
+          explode: false
+          schema:
+            type: array
+            items:
+              type: string
+          style: form
+          example:
+            - friends
+            - family
+      responses:
+        200:
+          description: Success!
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  id:
+                    type: integer
+                  name:
+                    type: string