Align bare-metal and containerized defaults: ftslave=false, parallelRequestLimit=80

[Copilot]

Containerized deployments default to ftslave=false (using dafilesrv) and parallelRequestLimit=20, while bare-metal defaults were ftslave=true and had inconsistent parallelRequestLimit values across configuration files. This PR aligns both deployment types to use consistent defaults.

Changes

ftslave default

• dali/dfu/dfurun.cpp: Changed bare-metal default from isContainerized() ? false : true to false
• Both deployment types now use dafilesrv by default

parallelRequestLimit default (20 → 80)

Updated to match code default DEFAULT_STDCMD_PARALLELREQUESTLIMIT:

• initfiles/etc/DIR_NAME/environment.xml.in: DafilesrvProcess and Instance elements
• testing/regress/environment.xml.in: DafilesrvProcess and Instance elements
• initfiles/componentfiles/configxml/dafilesrv.xsd: Global and Instance attribute defaults
• initfiles/componentfiles/configschema/xsd/dafilesrv.xsd: presetValue attribute
• helm/hpcc/values.schema.json: Default value (also fixed type from string to integer)

Incidental fixes

• Corrected spelling: "settting" → "setting" in tooltip text
• Fixed grammar: "This a global setting" → "This is a global setting"

Original prompt

Currently, containerized defaults to ftslave=false and uses dafilesrv, but bare-metal (non-containerized) uses ftslave=true by default.
Change the default in bare-metal so it is also ftslave=false and hence uses dafilesrv.

Also, change the defaults for DEFAULT_STDCMD_PARALLELREQUESTLIMIT and DEFAULT_SLOWCMD_PARALLELREQUESTLIMIT, so that k8s containerized is the same as bare-metal. Note there are defaults in environment.xml.in that also need to be udpated.

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