#2032: fixed broken output of commandlet env bash

[oanding-blrng]

This PR fixes #2032

Implemented changes:

• Added null-check in getToolPath() in GrallVm.java
• Added log level checks to only log warnings, if user wants them with debug-mode

---

Testing instructions

Please add conscise, understandable instructions on how a reviewer can test/verify the functionality of your contribution here:

To test the fix for NullPointerException :

1. Checkout commit #2032 Added null check to prevent NullPointerException in EnvironmentCommandlet.
2. Modify IntelliJ Run configuration (working directory has to point to place outside of an IDEasy project):

3. Run configuration 4. No warnings, or errors are printed

To test correct log-level:

1. Checkout commit 'commandlet env bash leads to broken output #2032 Added additional checks for logging level before logging warnings or errors in EnvironmentCommandlet.'
2. Comment out null check in getToolPath() in GrallVm.java to reintroduce bug
3. Run configuration mentioned above
4. No errors or exceptions will be logged
5. Modify commandline args to --debug env --bash
6. Run modified configuration
7. Error and exception will be logged

---

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
• You have formulated clear instructions on how to test your contribution under "Testing instructions"

[coveralls]

Coverage Report for CI Build 27630322442

Coverage decreased (-0.04%) to 71.242%

Details

• Coverage decreased (-0.04%) from the base build.
• Patch coverage: No coverable lines changed in this PR.
• 7 coverage regressions across 2 files.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

7 previously-covered lines in 2 files lost coverage.

File	Lines Losing Coverage	Coverage
com/devonfw/tools/ide/commandlet/EnvironmentCommandlet.java	6	82.64%
com/devonfw/tools/ide/version/VersionSegment.java	1	89.76%

---

Coverage Stats

Relevant Lines:	16226
Covered Lines:	12055
Line Coverage:	74.29%
Relevant Branches:	7256
Covered Branches:	4674
Branch Coverage:	64.42%
Branches in Coverage %:	Yes
Coverage Strength:	3.14 hits per line

---

💛 - Coveralls