Support for JDK25.0.2 and migrate Graal compiler version to 25.0.2

[mikepapadim]

This PR migrates TornadoVM to JDK25 and Graal Compiler to 25.0.2.

To dos:

• OpenCL Backend
• PTX Backend
• SPIRV Backend
• CI to handle both 21 & 25
• Double release protocol
• Double release protocol -> Maven
• Double release protocol -> SDKMAN

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MVP: Testing and migration matrix:

Backend	JDK 25.0.2 + Graal 25.0.2	GraalVM 25.0.2	Status	Notes
OpenCL	✅ Migrated	✅ Migrated	Complete	All tests passing
PTX	✅ Migrated	✅ Migrated	Complete	All tests passing
SPIRV	✅ Migrated	✅ Migrated	Complete	All tests passing

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Backend	JDK 25.0.2 + Graal 25.0.2	GraalVM 25.0.2	Eclipse Temurin 25.0.2	Red Hat Mandrel 25.0.2	Amazon Corretto 25.0.2	Microsoft JDK 25.0.2	Azul Zulu 25.0.2	Notes
OpenCL	✅	✅	✅	✅	✅	✅	✅	Done
PTX	✅	✅	✅	✅	✅	✅	✅	TBD
SPIR-V	✅	✅	✅	✅	✅	✅	✅	TBD

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[mairooni]

Some minor comments

[CLAassistant]

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2 out of 4 committers have signed the CLA.

✅ stratika
✅ mikepapadim
❌ claude
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