[PWGLF] Fix v0 radius cut condition

[nepeivodaRS]

Fixes the bug in the v0 radius selection.

[github-actions]

O2 linter results: ❌ 25 errors, ⚠️ 8 warnings, 🔕 0 disabled

[alibuild]

Error while checking build/O2Physics/code-check for 5e92559 at 2026-07-10 10:10:

## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'Found 7 errors and 26 warnings.'
Found 7 errors and 26 warnings.
++ [[ 7 -gt 0 ]]
++ cat /sw/BUILD/c226e0ce8313f6a58afbbd72f8be26b6792cda4f/O2Physics-code-check/errors.txt
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:91:58: error: implicit conversion 'bool' -> 'Double_t' (aka 'double') [readability-implicit-bool-conversion,-warnings-as-errors]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:97:58: error: implicit conversion 'bool' -> 'Double_t' (aka 'double') [readability-implicit-bool-conversion,-warnings-as-errors]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:98:58: error: implicit conversion 'bool' -> 'Double_t' (aka 'double') [readability-implicit-bool-conversion,-warnings-as-errors]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:111:80: error: implicit conversion 'bool' -> 'float' [readability-implicit-bool-conversion,-warnings-as-errors]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:418:13: error: implicit conversion 'bool' -> 'int' [readability-implicit-bool-conversion,-warnings-as-errors]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:458:17: error: implicit conversion 'bool' -> 'int' [readability-implicit-bool-conversion,-warnings-as-errors]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:497:17: error: implicit conversion 'bool' -> 'int' [readability-implicit-bool-conversion,-warnings-as-errors]
++ [[ 26 -gt 0 ]]
++ cat /sw/BUILD/c226e0ce8313f6a58afbbd72f8be26b6792cda4f/O2Physics-code-check/warnings.txt
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:231:41: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:235:39: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:239:44: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:243:92: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:247:58: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:251:58: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:255:99: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:266:41: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:270:75: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:274:49: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:276:49: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:280:57: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:282:57: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:286:49: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:290:47: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:292:47: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:296:72: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:300:74: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:304:61: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:306:61: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:310:59: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:312:59: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:316:52: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:318:52: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:322:52: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/Tasks/Strangeness/v0postprocessing.cxx:324:52: warning: statement should be inside braces [readability-braces-around-statements]
++ [[ 7 -gt 0 ]]
++ exit 1
--

Full log here.