Fix new 1.15 update "|dam" focus tree parse issue

[IShiraiKurokoI]

Fix 1.15 "|dam" parse issue.

Captured parse result in JSON below:

{
  name: "custom_effect_tooltip",
  nameToken: {
    value: "custom_effect_tooltip",
    start: 27775,
    end: 27796,
    type: "symbol",
  },
  operator: "=",
  operatorToken: {
    value: "=",
    start: 27797,
    end: 27798,
    type: "operator",
  },
  value: [
    {
      name: "localization_key",
      nameToken: {
        value: "localization_key",
        start: 27806,
        end: 27822,
        type: "symbol",
      },
      operator: "=",
      operatorToken: {
        value: "=",
        start: 27823,
        end: 27824,
        type: "operator",
      },
      value: {
        name: "building_state_modifier|dam",
      },
      valueStartToken: {
        value: "building_state_modifier|dam",
        start: 27825,
        end: 27852,
        type: "symbol",
      },
      valueEndToken: {
        value: "building_state_modifier|dam",
        start: 27825,
        end: 27852,
        type: "symbol",
      },
      valueAttachment: null,
      valueAttachmentToken: null,
    },
    {
      name: "INDENT",
      nameToken: {
        value: "INDENT",
        start: 27858,
        end: 27864,
        type: "symbol",
      },
      operator: "=",
      operatorToken: {
        value: "=",
        start: 27865,
        end: 27866,
        type: "operator",
      },
      value: "    ",
      valueStartToken: {
        value: "\"    \"",
        start: 27867,
        end: 27873,
        type: "string",
      },
      valueEndToken: {
        value: "\"    \"",
        start: 27867,
        end: 27873,
        type: "string",
      },
      valueAttachment: null,
      valueAttachmentToken: null,
    },
  ],
  valueStartToken: {
    value: "{",
    start: 27799,
    end: 27800,
    type: "operator",
  },
  valueEndToken: {
    value: "}",
    start: 27878,
    end: 27879,
    type: "operator",
  },
  valueAttachment: null,
  valueAttachmentToken: null,
}