fix(autoedit): fix suffix matching logic

[valerybugakov]

Fixes the issue where the inline completion item provider is used in cases where chars deletions are required after the cursor because of the incorrect suffix matching logic.

Test plan

Manually tested by renaming the attributes to values in the following code and placing the cursor on the const { currentLinePrefix, text, ...rest } = values line:

export const addAutocompleteDebugEvent = (
    name: string,
    attributes: Record<string, unknown> = {}
): Span | undefined => {
    if (process.env.NODE_ENV === 'development') {
        const activeSpan = trace.getActiveSpan()

        const { currentLinePrefix, text, ...rest } = attributes
        if (typeof currentLinePrefix === 'string' && typeof text === 'string') {
            const formattedText = `${currentLinePrefix}█${text.trimStart()}`
            return activeSpan?.addEvent(name, { text: formattedText, ...rest })
        }

        return activeSpan?.addEvent(name, attributes as Attributes)
    }
    return undefined
}

Currently, we don't have automated tests for the renderer and provider. We plan to implement them early next week