fix(grid-lite): column field NoInfer to avoid fallback type compat issue

[damyanpetev]

Closes #16962

Description

When assigning Grid Lite column field template type checker infers the column component's T from the binding, uses TypeScript's type inference to solve for T from Keys<T>. Since Keys is a complex conditional/mapped type (and kinda inferred itself), TypeScript can't reverse-infer it cleanly and lands on { [x: string]: {} }, where Keys<{ [x: string]: {} }> = string | number (no symbol). Meanwhile column.field is Keys<any> = keyof any = string | number | symbol. The symbol can't be assigned — hence the error.

The cleanest solution without narrowing the defaults is to turn off the infer on field; feels a bit odd to have the key produce the type back anyway.

Type of Change (check all that apply):

• Bug fix
• New functionality
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactoring (no functional changes)
• Documentation
• Demos
• CI/CD
• Tests
• Changelog
• Skills/Agents

How Has This Been Tested?

• Unit tests Can't repro type error in current test setup, demo build should keep the error in check
• Manual testing
• Automated e2e tests

Checklist:

• All relevant tags have been applied to this PR
• This PR includes unit tests covering all the new code (test guidelines)
• This PR includes API docs for newly added methods/properties (api docs guidelines)
• This PR includes feature/README.MD updates for the feature docs
• This PR includes general feature table updates in the root README.MD
• This PR includes CHANGELOG.MD updates for newly added functionality
• This PR contains breaking changes
• This PR includes ng update migrations for the breaking changes (migrations guidelines)
• This PR includes behavioral changes and the feature specification has been updated with them
• Accessibility (ARIA, keyboard navigation, focus management) has been verified

[Copilot]

Pull request overview

This PR addresses a Grid Lite template type-checking inference issue where binding column.field could cause TypeScript to infer an incorrect fallback model type, leading to symbol incompatibility errors.

Changes:

• Updated IgxGridLiteColumnComponent.field input type to use NoInfer<Keys<T>> to prevent reverse-inference of T from the field binding.
• Updated the Grid Lite sample to demonstrate both untyped and typed IgxGridLiteColumnConfiguration usage with dynamic column rendering via @for.
• Typed the sample data as User[] to align with the sample data service model.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src/app/grid-lite/grid-lite.sample.ts	Updates the sample to use IgxGridLiteColumnConfiguration arrays (typed and untyped) and types the data as User[].
src/app/grid-lite/grid-lite.sample.html	Replaces the hard-coded age column with @for-rendered columns from the sample configuration arrays.
projects/igniteui-angular/grids/lite/src/grid-lite-column.component.ts	Prevents generic type inference from the field input by wrapping Keys<T> in NoInfer.