Fix lint failure: correct gofmt alignment in FeatureFlags struct (TEP-0048 default results)

[Copilot]

The lint CI job was failing because PR #9653 (TEP-0048: default results) introduced incorrect struct field alignment in pkg/apis/config/feature_flags.go when adding EnableDefaultResults. gofmt requires all consecutive struct fields to align to the longest field name; the PR broke this by using inconsistent tab stops.

Changes

• pkg/apis/config/feature_flags.go: Re-align FeatureFlags struct fields so EnableDefaultResults and siblings align to EnableTerminationMessageCompression (longest name in the block):

  // Before (fails gofmt)
  EnableDefaultResults         bool   `json:"enableDefaultResults,omitempty"`
  EnableWaitExponentialBackoff         bool `json:"enableWaitExponentialBackoff,omitempty"`
  EnableTerminationMessageCompression bool `json:"enableTerminationMessageCompression,omitempty"`
  
  // After (passes gofmt)
  EnableDefaultResults                bool   `json:"enableDefaultResults,omitempty"`
  EnableWaitExponentialBackoff        bool   `json:"enableWaitExponentialBackoff,omitempty"`
  EnableTerminationMessageCompression bool   `json:"enableTerminationMessageCompression,omitempty"`

• test/e2e-tests.sh: Fix spurious comma in printf format string that would have been printed literally instead of acting as a separator.
• All remaining changes are the TEP-0048 default results feature from PR TEP-0048: default results #9653 (new Default field on TaskResult, validation, reconciler wiring, conversion, deep copy, examples).

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Release Notes

NONE

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