Resolve conflict between binary-expression-wrapping and chain-wrapping

[paul-dingemans]

Given code below:

// Assume that the last allowed character is
// at the X character on the right                  X
val foo1 =
    foo(
        """longgggggggggggggggggggggggggggggggggg""" +
            """foo""",
    )
val foo2 =
    """longgggggggggggggggggggggggggggggggggggggg""" +
        """foo"""

then ktlint 1.1.0 reports following violations:

src/main/kotlin/Foo.kt:5:9: Line is exceeding max line length. Break line before expression (standard:binary-expression-wrapping)
src/main/kotlin/Foo.kt:5:54: Exceeded max line length (53) (standard:max-line-length)
src/main/kotlin/Foo.kt:9:54: Exceeded max line length (53) (standard:max-line-length)

(Interestingly, no error is reported on line 9.)

Wrapping the + operator at line 5 is however not allowed by chain-wrapping:

src/main/kotlin/Foo.kt:6:13: Line must not begin with "+" (standard:chain-wrapping)

binary-expression-wrapping should not suggest to wrap the left hand side of the expression when it is the root of the expression and only let the expression be reported by the max-line-length rule.