#1270: Load global user settings outside project

[ducminh02]

This PR fixes #1270

Implemented changes:

• Updated setUserHome to refresh dependent paths (userHomeIde, downloadPath) and reset variables. This ensures tests using isolated user homes correctly load local configurations like ide.properties.

---

Checklist for this PR

Make sure everything is checked before merging this PR. For further info please also see
our DoD.

• When running mvn clean test locally all tests pass and build is successful
• PR title is of the form #«issue-id»: «brief summary» (e.g. #921: fixed setup.bat). If no issue ID exists, title only.
• PR top-level comment summarizes what has been done and contains link to addressed issue(s)
• PR and issue(s) have suitable labels
• Issue is set to In Progress and assigned to you or there is no issue (might happen for very small PRs)
• You followed all coding conventions
• You have added the issue implemented by your PR in CHANGELOG.adoc unless issue is labeled
  with internal

[coveralls]

Coverage Report for CI Build 24239455949

Coverage increased (+0.01%) to 70.478%

Details

• Coverage increased (+0.01%) from the base build.
• Patch coverage: No coverable lines changed in this PR.
• 105 coverage regressions across 3 files.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

105 previously-covered lines in 3 files lost coverage.

File	Lines Losing Coverage	Coverage
com/devonfw/tools/ide/context/AbstractIdeContext.java	103	66.01%
com/devonfw/tools/ide/commandlet/EnvironmentCommandlet.java	1	94.44%
com/devonfw/tools/ide/tool/ide/IdeToolCommandlet.java	1	78.33%

---

Coverage Stats

Relevant Lines:	15070
Covered Lines:	11071
Line Coverage:	73.46%
Relevant Branches:	6690
Covered Branches:	4265
Branch Coverage:	63.75%
Branches in Coverage %:	Yes
Coverage Strength:	3.1 hits per line

---

💛 - Coveralls