fix: Double recursive loops can cause server lockup on deeply nested docs (#5222)

server/utils/parseAttachmentIds.test.ts

@@ -6,6 +6,7 @@ import parseAttachmentIds from "./parseAttachmentIds";
 it("should return an empty array with no matches", () => {
   expect(parseAttachmentIds(`some random text`).length).toBe(0);
 });
+
 it("should not return orphaned UUID's", () => {
   const uuid = uuidv4();
   expect(
@@ -14,6 +15,7 @@ it("should not return orphaned UUID's", () => {
 ![caption](/images/${uuid}.png)`).length
   ).toBe(0);
 });
+
 it("should parse attachment ID from markdown", () => {
   const uuid = uuidv4();
   const results = parseAttachmentIds(
@@ -22,6 +24,7 @@ it("should parse attachment ID from markdown", () => {
   expect(results.length).toBe(1);
   expect(results[0]).toBe(uuid);
 });
+
 it("should parse attachment ID from markdown with additional query params", () => {
   const uuid = uuidv4();
   const results = parseAttachmentIds(
@@ -30,6 +33,7 @@ it("should parse attachment ID from markdown with additional query params", () =
   expect(results.length).toBe(1);
   expect(results[0]).toBe(uuid);
 });
+
 it("should parse attachment ID from markdown with fully qualified url", () => {
   const uuid = uuidv4();
   const results = parseAttachmentIds(
@@ -38,6 +42,7 @@ it("should parse attachment ID from markdown with fully qualified url", () => {
   expect(results.length).toBe(1);
   expect(results[0]).toBe(uuid);
 });
+
 it("should parse attachment ID from markdown with title", () => {
   const uuid = uuidv4();
   const results = parseAttachmentIds(
@@ -46,6 +51,7 @@ it("should parse attachment ID from markdown with title", () => {
   expect(results.length).toBe(1);
   expect(results[0]).toBe(uuid);
 });
+
 it("should parse multiple attachment IDs from markdown", () => {
   const uuid = uuidv4();
   const uuid2 = uuidv4();
@@ -58,6 +64,7 @@ some text
   expect(results[0]).toBe(uuid);
   expect(results[1]).toBe(uuid2);
 });
+
 it("should parse attachment ID from html", () => {
   const uuid = uuidv4();
   const results = parseAttachmentIds(
@@ -66,6 +73,7 @@ it("should parse attachment ID from html", () => {
   expect(results.length).toBe(1);
   expect(results[0]).toBe(uuid);
 });
+
 it("should parse attachment ID from html with fully qualified url", () => {
   const uuid = uuidv4();
   const results = parseAttachmentIds(