Completing callable fields inside struct initialization will insert parenthesis after field name

[dfireBird]

When completing callable fields inside struct initialization, it will insert function calling parenthesis after field name. Regression caused by #15879

struct S {
    field: fn(),
}

fn main() {
    S {fi$0
}

Actual Behavior:

struct S {
    field: fn(),
}

fn main() {
    S {field()
}

Intended Behavior:

struct S {
    field: fn(),
}

fn main() {
    S {field
}

rust-analyzer version: 0.3.1756-standalone

rustc version: rustc 1.74.0 (79e9716c9 2023-11-13)

relevant settings: Default values no specific changes required.

[dfireBird]

Found the root cause as well, the function call parenthesis are inserted regardless of whether parenthesis around the receiver inserted or not. That shouldn't be the case, the function call parenthesis is only valid if parenthesis around the receiver is inserted. I will open a PR as well for this.