If a hex literal has an 'd' of 'f' in it, such as '0xf' or '0xd', the compiler fails with illegal tree structure.

The other hex literals work.  The issue is probably related to using `f` and `d` in float and double literals.

```
    public void testHexCollisionDouble() {
        assertEquals(13, exec("return 0xd"));
    }

    public void testHexCollisionFloat() {
        assertEquals(15, exec("return 0xf"));
    }

    public void testHex() throws Exception {
        for (int i = 0; i <= 15; i++) {
            String hex = Integer.toHexString(i);
            if ("d".equals(hex) || "f".equals(hex)) {
                continue;
            }
            assertEquals(i, exec("return 0x" + hex));
            assertEquals(i, exec("return 0x" + hex.toUpperCase(Locale.ROOT)));
            assertEquals(i, exec("return 0X" + hex));
            assertEquals(i, exec("return 0X" + hex.toUpperCase(Locale.ROOT)));
        }
    }
```
modules/lang-painless/src/main/java/org/elasticsearch/painless/phase/DefaultSemanticAnalysisPhase.java
throw userNumericNode.createError(new IllegalArgumentException("Invalid long constant [" + numeric + "]."));
            }
        } else {
            try {
                TargetType targetType = semanticScope.getDecoration(userNumericNode, TargetType.class);
                Class<?> sort = targetType == null ? int.class : targetType.targetType();
                int integer = Integer.parseInt(numeric, radix);
                if (sort == byte.class && integer >= Byte.MIN_VALUE && integer <= Byte.MAX_VALUE) {
                    constant = (byte) integer;
                    valueType = byte.class;
                } else if (sort == char.class && integer >= Character.MIN_VALUE && integer <= Character.MAX_VALUE) {
                    constant = (char) integer;
                    valueType = char.class;
                } else if (sort == short.class && integer >= Short.MIN_VALUE && integer <= Short.MAX_VALUE) {
                    constant = (short) integer;
                    valueType = short.class;
                } else {
                    constant = integer;
                    valueType = int.class;
                }
            } catch (NumberFormatException exception) {
                try {
                    
                    Long.parseLong(numeric, radix);
                    throw userNumericNode.createError(
                        new IllegalArgumentException(
                            "Invalid int constant [" + numeric + "]. If you want a long constant then change it to [" + numeric + "L]."
                        )
                    );
                } catch (NumberFormatException longNoGood) {