RFR: 8353063: make/ide/vscode: Invalid Configuration Values

[Manuel Hässig]

The indexer setting templates used by the `vscode-project-*` `make` targets contain invalid configuration values. For example, `C_Cpp.formatting": "Disabled"`is invalid because VSCode (or rather the extension) expects the value to be non-capitalized. This PR fixes these invalid configuration options.

 I tested the changes by generating VSCode workspaces and checking whether VSCode complains about invalid values.

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Commit messages:
 - make/ide/vscode: Fix invalid configuration values

Changes: https://git.openjdk.org/jdk/pull/24280/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24280&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8353063
  Stats: 12 lines in 3 files changed: 0 ins; 0 del; 12 mod
  Patch: https://git.openjdk.org/jdk/pull/24280.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24280/head:pull/24280

PR: https://git.openjdk.org/jdk/pull/24280