Add CeaTso request failed troubleshooting tip for V3 docs

[TusharB-07]

Adds a troubleshooting section for the CeaTso request failed HTTP 500
error encountered when using Zowe CLI or Zowe Explorer.

Closes #2665

[github-actions]

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[Copilot]

Pull request overview

Adds documentation to help troubleshoot the “CeaTso request failed” HTTP 500 error (commonly seen via Zowe CLI / Zowe Explorer when accessing USS files or data sets), including immediate and permanent remediation steps.

Changes:

• Adds a new troubleshooting ISSUE section for “CeaTso request failed with HTTP 500 error”
• Documents steps to inspect IPC resources (ipcs -x) and mitigate via recycling ZWESLSTC and a zowe.yaml setting

---

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[Copilot]

This new section uses a different heading level/style than the rest of the page ("## ISSUE" vs existing "### ISSUE"), and the bold labels are missing the trailing colons ("Symptom"/"Solution" vs "Symptom:"/"Solution:"). For consistency (and to avoid TOC/structure oddities), align the heading level and label punctuation with the other ISSUE sections in this file.

[Copilot]

The fenced code block for ipcs -x is not indented under list item 1, so many Markdown renderers will break the numbered list (the code block becomes outside the list, and numbering/indentation can reset). Indent the opening/closing ``` fence (and its contents) so it is clearly part of item 1.

[Copilot]

The zowe.yaml snippet is also fenced at column 0 while it’s introduced as part of list item 3, which can break list rendering. Additionally, the YAML example includes extra leading indentation before the top-level zowe: key, which makes copy/paste into a YAML file more error-prone. Indent the fence under the list item and format the YAML with zowe: starting at column 0 (with consistent 2-space indentation beneath).

Suggested change

	```yaml
	zowe:
	environments:
	ZWE_PRIVATE_CLEANUP_IPC_MQ: true
	```
	```yaml
	zowe:
	environments:
	ZWE_PRIVATE_CLEANUP_IPC_MQ: true

[Maanvi212006]

@TusharB-07 Add the required labels. Check docs-site labels to see the labels that are available for use.