[4.6.4] Attempt to fix crash in NetworkManager. Part 2

[RomanPudashkin]

Previous attempt: #30548

[DmitryArefiev]

CASE 1

1. Make sure you're logged in to musescore.com (open-close MSS)
2. Create a rule for MSS in Firewall & network protection>Advanced settings>Outbound Rules
3. Set Allow the connection in that rule
4. Run MSS
5. Open the rule and change settings to Allow the connection if it is secure
6. Go back to MSS
7. On Accounts page, click Sign out
8. Click Scores page

bandicam.2025-11-05.17-43-10-975.mp4

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CASE 2

1. Make sure you're logged in to musescore.com (open-close MSS)
2. Create a rule for MSS in Firewall & network protection>Advanced settings>Outbound Rules
3. Set Allow the connection in that rule
4. Run MSS
5. Open cloud score
6. Open firewall rule and change settings to Allow the connection if it is secure
7. Go back to MSS
8. Make some changes in cloud score
9. Close score and click Save
10. Click Home tab

bandicam.2025-11-06.15-57-08-015.mp4

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These two cases are FIXED in latest PR's build (tested on Win11)

[zacjansheski]

Tested on MacOS 15, Windows 11, Ubuntu 22.04.3. Approved

[DmitryArefiev]

Tested on Win10, LinuxUbuntu24.04.3 LTS. PASS