Complete Xtext 2.44 upgrade

[skrcode]

Companion fix for #5803.

Xtext 2.44 raises two OSGi runtime floors that the version-only update does not carry with it: ClassGraph from 4.8.184 to 4.8.192 and ASM from 9.9.1 to 9.10.1. The existing openhab-core feature requirements also still reject Xtext 2.44.

This change:

• aligns the xtext and xtext-ide capability ranges with 2.44;
• updates ClassGraph in the compile/runtime BOMs and target-platform feature;
• updates ASM and makes Xtext's five ASM runtime bundles explicit in the target-platform feature;
• regenerates the affected integration-test run bundles with the repository's bnd resolver.

There are no production Java changes.

Verification on Amazon Corretto 21.0.9:

• Baseline at the exact Dependabot head (c27ec1) reproduced the CI failure after the tests: Karaf could not satisfy the core feature's Xtext [2.43,2.44) requirement.
• Focused 109-module candidate build passed all 24 target-platform and 53 core Karaf feature verifications.
• Repository-native resolver verification passed the five Xtext-dependent integration-test suites and their 116-module reactor.
• Final clean 145-module candidate build passed in 7m19s, including all integration-test modules: 21,472 Surefire/Failsafe tests, 0 failures, 0 errors (7 skipped).

Commands used:

./mvnw -pl features/karaf/openhab-tp,features/karaf/openhab-core -am verify -B -T 1.5C -DskipChecks -DskipTests -Dspotless.check.skip=true
./mvnw -pl itests/org.openhab.core.model.item.tests,itests/org.openhab.core.model.rule.tests,itests/org.openhab.core.model.script.tests,itests/org.openhab.core.model.thing.tests,itests/org.openhab.core.thing.tests -am verify -B -T 2.5C -DskipChecks -DskipTests -DwithResolver -Dspotless.check.skip=true
./mvnw clean verify -B -T 1.5C -DskipChecks -Dspotless.check.skip=true

Spotless was skipped locally because this machine's shared Equo P2 cache contains a stale external lock; git diff --check and XML parsing pass, and the repository CI remains the authoritative formatting check.